Gynecologic Surgery

Researchers conducting a cost-utility analysis of sentinel lymph node (SLN) mapping and lymph node dissection (LND), both selective and routine, for low-risk endometrial carcinoma (clinical stage 1 disease with grade 1-2 endometrioid histology on preoperative endometrial biopsy), found that the SLN mapping had the lowest costs and the highest quality-adjusted survival of the three strategies.

Between the two strategies of LND, selective LND based on intraoperative frozen section was more cost-effective than routine LND.

The researchers created a model using data from past studies and clinical estimates. “Our biggest assumption was that sentinel lymph node mapping is associated with a decreased risk of lymphedema compared with lymph node dissection ... [from] several studies showing that having less than five lymph nodes excised was associated with a much smaller risk of developing lymphedema,” wrote Rudy S. Suidan, MD, of the MD Anderson Cancer Center, Houston, and his coauthors. Lymphedema was the main factor affecting quality of life in the analysis.

The analysis included estimates of rates of lymphadenectomy, bilateral mapping, and unilateral mapping, 3-year disease-specific survival, and overall survival, all of which were compared with third-party reimbursement costs at 2016 Medicare rates.

SLN mapping cost $16,401 per patient, while selective LND cost $17,036 per patient and routine LND cost $18,041 per patient. These strategies had quality-adjusted life years of 2.87, 2.81, and 2.79, respectively.

The superior cost-effectiveness of SLN mapping held, even when the researchers altered several of the variables in the model, including assuming open surgery instead of minimally invasive, and altering the assumed risk of lymphedema.

In addition to the possible limitation of making assumptions about SLN mapping and lymphedema, the researchers also pointed to the 3-year survival rates as shorter-term than preferable, driven by the available literature. The quality-adjusted life years did not differ much between the strategies because “most patients with low-risk cancer tend to have good clinical outcomes,” they wrote.

“This adds to the body of literature evaluating the clinical benefits of this strategy and may help health care providers in the decision-making process as they consider which approach to use,” the researchers wrote.

Dr. Suidan is supported by an NIH grant. Three coauthors reported other grants and fellowships. Five coauthors reported research support from AstraZeneca, Bayer, Clovis Oncology, and several other companies.

[email protected]

SOURCE: Suidan RS et al. Obstet Gynecol. 2018 Jun 11;132:52-8.

Researchers conducting a cost-utility analysis of sentinel lymph node (SLN) mapping and lymph node dissection (LND), both selective and routine, for low-risk endometrial carcinoma (clinical stage 1 disease with grade 1-2 endometrioid histology on preoperative endometrial biopsy), found that the SLN mapping had the lowest costs and the highest quality-adjusted survival of the three strategies.

Between the two strategies of LND, selective LND based on intraoperative frozen section was more cost-effective than routine LND.

The researchers created a model using data from past studies and clinical estimates. “Our biggest assumption was that sentinel lymph node mapping is associated with a decreased risk of lymphedema compared with lymph node dissection ... [from] several studies showing that having less than five lymph nodes excised was associated with a much smaller risk of developing lymphedema,” wrote Rudy S. Suidan, MD, of the MD Anderson Cancer Center, Houston, and his coauthors. Lymphedema was the main factor affecting quality of life in the analysis.

The analysis included estimates of rates of lymphadenectomy, bilateral mapping, and unilateral mapping, 3-year disease-specific survival, and overall survival, all of which were compared with third-party reimbursement costs at 2016 Medicare rates.

SLN mapping cost $16,401 per patient, while selective LND cost $17,036 per patient and routine LND cost $18,041 per patient. These strategies had quality-adjusted life years of 2.87, 2.81, and 2.79, respectively.

The superior cost-effectiveness of SLN mapping held, even when the researchers altered several of the variables in the model, including assuming open surgery instead of minimally invasive, and altering the assumed risk of lymphedema.

In addition to the possible limitation of making assumptions about SLN mapping and lymphedema, the researchers also pointed to the 3-year survival rates as shorter-term than preferable, driven by the available literature. The quality-adjusted life years did not differ much between the strategies because “most patients with low-risk cancer tend to have good clinical outcomes,” they wrote.

“This adds to the body of literature evaluating the clinical benefits of this strategy and may help health care providers in the decision-making process as they consider which approach to use,” the researchers wrote.

Dr. Suidan is supported by an NIH grant. Three coauthors reported other grants and fellowships. Five coauthors reported research support from AstraZeneca, Bayer, Clovis Oncology, and several other companies.

[email protected]

SOURCE: Suidan RS et al. Obstet Gynecol. 2018 Jun 11;132:52-8.

Researchers conducting a cost-utility analysis of sentinel lymph node (SLN) mapping and lymph node dissection (LND), both selective and routine, for low-risk endometrial carcinoma (clinical stage 1 disease with grade 1-2 endometrioid histology on preoperative endometrial biopsy), found that the SLN mapping had the lowest costs and the highest quality-adjusted survival of the three strategies.

Between the two strategies of LND, selective LND based on intraoperative frozen section was more cost-effective than routine LND.

The researchers created a model using data from past studies and clinical estimates. “Our biggest assumption was that sentinel lymph node mapping is associated with a decreased risk of lymphedema compared with lymph node dissection ... [from] several studies showing that having less than five lymph nodes excised was associated with a much smaller risk of developing lymphedema,” wrote Rudy S. Suidan, MD, of the MD Anderson Cancer Center, Houston, and his coauthors. Lymphedema was the main factor affecting quality of life in the analysis.

The analysis included estimates of rates of lymphadenectomy, bilateral mapping, and unilateral mapping, 3-year disease-specific survival, and overall survival, all of which were compared with third-party reimbursement costs at 2016 Medicare rates.

SLN mapping cost $16,401 per patient, while selective LND cost $17,036 per patient and routine LND cost $18,041 per patient. These strategies had quality-adjusted life years of 2.87, 2.81, and 2.79, respectively.

The superior cost-effectiveness of SLN mapping held, even when the researchers altered several of the variables in the model, including assuming open surgery instead of minimally invasive, and altering the assumed risk of lymphedema.

In addition to the possible limitation of making assumptions about SLN mapping and lymphedema, the researchers also pointed to the 3-year survival rates as shorter-term than preferable, driven by the available literature. The quality-adjusted life years did not differ much between the strategies because “most patients with low-risk cancer tend to have good clinical outcomes,” they wrote.

“This adds to the body of literature evaluating the clinical benefits of this strategy and may help health care providers in the decision-making process as they consider which approach to use,” the researchers wrote.

Dr. Suidan is supported by an NIH grant. Three coauthors reported other grants and fellowships. Five coauthors reported research support from AstraZeneca, Bayer, Clovis Oncology, and several other companies.

[email protected]

SOURCE: Suidan RS et al. Obstet Gynecol. 2018 Jun 11;132:52-8.

We classify endometrial cancer so that we can communicate and define each patient’s disease status, the potential for harm, and the likelihood that adjuvant therapies might provide help. Traditional forms of classification have clearly fallen short in achieving this aim, as we all know of patients with apparent low-risk disease (such as stage IA grade 1 endometrioid carcinoma) who have had recurrences and died from their disease, and we know that many patients have been subjected to overtreatment for their cancer and have acquired lifelong toxicities of therapy. This column will explore the newer, more sophisticated molecular-based classifications that are being validated for endometrial cancer, and the ways in which this promises to personalize the treatment of endometrial cancer.

What is the Cancer Genome Atlas?

In 2006 the National Institutes of Health announced an initiative to coordinate work between the National Cancer Institute and the National Human Genome Research Institute taking information about the human genome and analyzing it for key genomic alterations found in 33 common cancers. These data were combined with clinical information (such as survival) to classify the behaviors of those cancers with respect to their individual genomic alternations, in order to look for patterns in mutations and behaviors. The goal of this analysis was to shift the paradigm of cancer classification from being centered around primary organ site toward tumors’ shared genomic patterns.

In 2013 the Cancer Genome Atlas published their results of complete gene sequencing in endometrial cancer.³ The authors identified four discrete subgroups of endometrial cancer with distinct molecular mutational profiles and distinct clinical outcomes: polymerase epsilon (POLE, pronounced “pole-ee”) ultramutated, microsatellite instability (MSI) high, copy number high, and copy number low.
 

POLE ultramutated

An important subgroup identified in the Cancer Genome Atlas was a group of patients with a POLE ultramutated state. POLE encodes for a subunit of DNA polymerase, the enzyme responsible for replicating the leading DNA strand. Nonfunctioning POLE results in proofreading errors and a subsequent ultramutated cellular state with a predominance of single nucleotide variants. POLE proofreading domain mutations in endometrial cancer and colon cancer are associated with excellent prognosis, likely secondary to the immune response that is elicited by this ultramutated state from creation of “antigenic neoepitopes” that stimulate T-cell response. Effectively, the very mutated cell is seen as “more foreign” to the body’s immune system.

Approximately 10% of patients with endometrial cancer have a POLE ultramutated state, and, as stated above, prognosis is excellent, even if coexisting with a histologic cell type (such as serous) that is normally associated with adverse outcomes. These women tend to be younger, with a lower body mass index, higher-grade endometrioid cell type, the presence of lymphovascular space invasion, and low stage.
 

MSI high

MSI (microsatellite instability) is a result of epigenetic/hypermethylations or loss of expression in mismatch repair genes (such as MLH1, MSH2, MSH6, PMS2). These genes code for proteins critical in the repair of mismatches in short repeated sequences of DNA. Loss of their function results in an accumulation of errors in these sequences: MSI. It is a feature of the Lynch syndrome inherited state, but is also found sporadically in endometrial tumors. These tumors accumulate a number of mutations during cell replication that, as in POLE hypermutated tumors, are associated with eliciting an immune response.

These tumors tend to be associated with a higher-grade endometrioid cell type, the presence of lymphovascular space invasion, and an advanced stage. Patients with tumors that have been described as MSI high are candidates for “immune therapy” with the PDL1 inhibitor pembrolizumab because of their proinflammatory state and observed favorable responses in clinical trials.⁴
 

Copy number high/low

Copy number (CN) high and low refers to the results of microarrays in which hierarchical clustering was applied to identify reoccurring amplification or deletion regions. The CN-high group was associated with the poorest outcomes (recurrence and survival). There is significant overlap with mutations in TP53. Most serous carcinomas were CN high; however, 25% of patients with high-grade endometrioid cell type shared the CN-high classification. These tumors shared great molecular similarity to high-grade serous ovarian cancers and basal-like breast cancer.

Those patients who did not possess mutations that classified them as POLE hypermutated, MSI high, or CN high were classified as CN low. This group included predominantly grades 1 and 2 endometrioid adenocarcinomas of an early stage and had a favorable prognostic profile, though less favorable than those with a POLE ultramutated state, which appears to be somewhat protective.
 

Molecular/metabolic interactions

While molecular data are clearly important in driving a cancer cell’s behavior, other clinical and metabolic factors influence cancer behavior. For example, body mass index, adiposity, glucose, and lipid metabolism have been shown to be important drivers of cellular behavior and responsiveness to targeted therapies.^5,6 Additionally age, race, and other metabolic states contribute to oncologic behavior. Future classifications of endometrial cancer are unlikely to use molecular profiles in isolation but will need to incorporate these additional patient-specific data to better predict and prognosticate outcomes.

Clinical applications

If researchers can better define and describe a patient’s endometrial cancer from the time of their biopsy, important clinical decisions might be able to be tackled. For example, in a premenopausal patient with an endometrial cancer who is considering fertility-sparing treatments, preoperative knowledge of a POLE ultramutated state (and therefore an anticipated good prognosis) might favor fertility preservation or avoid comprehensive staging which may be of limited value. Similarly, if an MSI-high profile is identified leading to a Lynch syndrome diagnosis, she may be more inclined to undergo a hysterectomy with bilateral salpingo-oophorectomy and staging as she is at known increased risk for a more advanced endometrial cancer, as well as the potential for ovarian cancer.

Postoperative incorporation of molecular data promises to be particularly helpful in guiding adjuvant therapies and sparing some women from unnecessary treatments. For example, women with high-grade endometrioid tumors who are CN high were historically treated with radiotherapy but might do better treated with systemic adjuvant therapies traditionally reserved for nonendometrioid carcinomas. Costly therapies such as immunotherapy can be directed toward those with MSI-high tumors, and the rare patient with a POLE ultramutated state who has a recurrence or advanced disease. Clinical trials will be able to cluster enrollment of patients with CN-high, serouslike cancers with those with serous cancers, rather than combining them with patients whose cancers predictably behave much differently.

Much work is still needed to validate this molecular profiling in endometrial cancer and define the algorithms associated with treatment decisions; however, it is likely that the way we describe endometrial cancer in the near future will be quite different.
 

Dr. Rossi is an assistant professor in the division of gynecologic oncology at the University of North Carolina at Chapel Hill. She has no disclosures.

References

1. Bokhman JV. Two pathogenetic types of endometrial carcinoma. Gynecol Oncol. 1983;15(1):10-7.

2. Clarke BA et al. Endometrial carcinoma: controversies in histopathological assessment of grade and tumour cell type. J Clin Pathol. 2010;63(5):410-5.

3. Cancer Genome Atlas Research Network. Integrated genomic characterization of endometrial carcinoma. Nature. 2013;497(7447):67-73.

4. Ott PA et al. Pembrolizumab in advanced endometrial cancer: Preliminary results from the phase Ib KEYNOTE-028 study. J Clin Oncol. 2016;34(suppl):Abstract 5581.

5. Roque DR et al. Association between differential gene expression and body mass index among endometrial cancers from the Cancer Genome Atlas Project. Gynecol Oncol. 2016;142(2):317-22.

6. Talhouk A et al. New classification of endometrial cancers: The development and potential applications of genomic-based classification in research and clinical care. Gynecol Oncol Res Pract. 2016 Dec;3:14.

We classify endometrial cancer so that we can communicate and define each patient’s disease status, the potential for harm, and the likelihood that adjuvant therapies might provide help. Traditional forms of classification have clearly fallen short in achieving this aim, as we all know of patients with apparent low-risk disease (such as stage IA grade 1 endometrioid carcinoma) who have had recurrences and died from their disease, and we know that many patients have been subjected to overtreatment for their cancer and have acquired lifelong toxicities of therapy. This column will explore the newer, more sophisticated molecular-based classifications that are being validated for endometrial cancer, and the ways in which this promises to personalize the treatment of endometrial cancer.

What is the Cancer Genome Atlas?

In 2006 the National Institutes of Health announced an initiative to coordinate work between the National Cancer Institute and the National Human Genome Research Institute taking information about the human genome and analyzing it for key genomic alterations found in 33 common cancers. These data were combined with clinical information (such as survival) to classify the behaviors of those cancers with respect to their individual genomic alternations, in order to look for patterns in mutations and behaviors. The goal of this analysis was to shift the paradigm of cancer classification from being centered around primary organ site toward tumors’ shared genomic patterns.

In 2013 the Cancer Genome Atlas published their results of complete gene sequencing in endometrial cancer.³ The authors identified four discrete subgroups of endometrial cancer with distinct molecular mutational profiles and distinct clinical outcomes: polymerase epsilon (POLE, pronounced “pole-ee”) ultramutated, microsatellite instability (MSI) high, copy number high, and copy number low.
 

POLE ultramutated

An important subgroup identified in the Cancer Genome Atlas was a group of patients with a POLE ultramutated state. POLE encodes for a subunit of DNA polymerase, the enzyme responsible for replicating the leading DNA strand. Nonfunctioning POLE results in proofreading errors and a subsequent ultramutated cellular state with a predominance of single nucleotide variants. POLE proofreading domain mutations in endometrial cancer and colon cancer are associated with excellent prognosis, likely secondary to the immune response that is elicited by this ultramutated state from creation of “antigenic neoepitopes” that stimulate T-cell response. Effectively, the very mutated cell is seen as “more foreign” to the body’s immune system.

Approximately 10% of patients with endometrial cancer have a POLE ultramutated state, and, as stated above, prognosis is excellent, even if coexisting with a histologic cell type (such as serous) that is normally associated with adverse outcomes. These women tend to be younger, with a lower body mass index, higher-grade endometrioid cell type, the presence of lymphovascular space invasion, and low stage.
 

MSI high

MSI (microsatellite instability) is a result of epigenetic/hypermethylations or loss of expression in mismatch repair genes (such as MLH1, MSH2, MSH6, PMS2). These genes code for proteins critical in the repair of mismatches in short repeated sequences of DNA. Loss of their function results in an accumulation of errors in these sequences: MSI. It is a feature of the Lynch syndrome inherited state, but is also found sporadically in endometrial tumors. These tumors accumulate a number of mutations during cell replication that, as in POLE hypermutated tumors, are associated with eliciting an immune response.

These tumors tend to be associated with a higher-grade endometrioid cell type, the presence of lymphovascular space invasion, and an advanced stage. Patients with tumors that have been described as MSI high are candidates for “immune therapy” with the PDL1 inhibitor pembrolizumab because of their proinflammatory state and observed favorable responses in clinical trials.⁴
 

Copy number high/low

Copy number (CN) high and low refers to the results of microarrays in which hierarchical clustering was applied to identify reoccurring amplification or deletion regions. The CN-high group was associated with the poorest outcomes (recurrence and survival). There is significant overlap with mutations in TP53. Most serous carcinomas were CN high; however, 25% of patients with high-grade endometrioid cell type shared the CN-high classification. These tumors shared great molecular similarity to high-grade serous ovarian cancers and basal-like breast cancer.

Those patients who did not possess mutations that classified them as POLE hypermutated, MSI high, or CN high were classified as CN low. This group included predominantly grades 1 and 2 endometrioid adenocarcinomas of an early stage and had a favorable prognostic profile, though less favorable than those with a POLE ultramutated state, which appears to be somewhat protective.
 

Molecular/metabolic interactions

While molecular data are clearly important in driving a cancer cell’s behavior, other clinical and metabolic factors influence cancer behavior. For example, body mass index, adiposity, glucose, and lipid metabolism have been shown to be important drivers of cellular behavior and responsiveness to targeted therapies.^5,6 Additionally age, race, and other metabolic states contribute to oncologic behavior. Future classifications of endometrial cancer are unlikely to use molecular profiles in isolation but will need to incorporate these additional patient-specific data to better predict and prognosticate outcomes.

Clinical applications

If researchers can better define and describe a patient’s endometrial cancer from the time of their biopsy, important clinical decisions might be able to be tackled. For example, in a premenopausal patient with an endometrial cancer who is considering fertility-sparing treatments, preoperative knowledge of a POLE ultramutated state (and therefore an anticipated good prognosis) might favor fertility preservation or avoid comprehensive staging which may be of limited value. Similarly, if an MSI-high profile is identified leading to a Lynch syndrome diagnosis, she may be more inclined to undergo a hysterectomy with bilateral salpingo-oophorectomy and staging as she is at known increased risk for a more advanced endometrial cancer, as well as the potential for ovarian cancer.

Postoperative incorporation of molecular data promises to be particularly helpful in guiding adjuvant therapies and sparing some women from unnecessary treatments. For example, women with high-grade endometrioid tumors who are CN high were historically treated with radiotherapy but might do better treated with systemic adjuvant therapies traditionally reserved for nonendometrioid carcinomas. Costly therapies such as immunotherapy can be directed toward those with MSI-high tumors, and the rare patient with a POLE ultramutated state who has a recurrence or advanced disease. Clinical trials will be able to cluster enrollment of patients with CN-high, serouslike cancers with those with serous cancers, rather than combining them with patients whose cancers predictably behave much differently.

Much work is still needed to validate this molecular profiling in endometrial cancer and define the algorithms associated with treatment decisions; however, it is likely that the way we describe endometrial cancer in the near future will be quite different.
 

Dr. Rossi is an assistant professor in the division of gynecologic oncology at the University of North Carolina at Chapel Hill. She has no disclosures.

References

1. Bokhman JV. Two pathogenetic types of endometrial carcinoma. Gynecol Oncol. 1983;15(1):10-7.

2. Clarke BA et al. Endometrial carcinoma: controversies in histopathological assessment of grade and tumour cell type. J Clin Pathol. 2010;63(5):410-5.

3. Cancer Genome Atlas Research Network. Integrated genomic characterization of endometrial carcinoma. Nature. 2013;497(7447):67-73.

4. Ott PA et al. Pembrolizumab in advanced endometrial cancer: Preliminary results from the phase Ib KEYNOTE-028 study. J Clin Oncol. 2016;34(suppl):Abstract 5581.

5. Roque DR et al. Association between differential gene expression and body mass index among endometrial cancers from the Cancer Genome Atlas Project. Gynecol Oncol. 2016;142(2):317-22.

6. Talhouk A et al. New classification of endometrial cancers: The development and potential applications of genomic-based classification in research and clinical care. Gynecol Oncol Res Pract. 2016 Dec;3:14.

We classify endometrial cancer so that we can communicate and define each patient’s disease status, the potential for harm, and the likelihood that adjuvant therapies might provide help. Traditional forms of classification have clearly fallen short in achieving this aim, as we all know of patients with apparent low-risk disease (such as stage IA grade 1 endometrioid carcinoma) who have had recurrences and died from their disease, and we know that many patients have been subjected to overtreatment for their cancer and have acquired lifelong toxicities of therapy. This column will explore the newer, more sophisticated molecular-based classifications that are being validated for endometrial cancer, and the ways in which this promises to personalize the treatment of endometrial cancer.

What is the Cancer Genome Atlas?

In 2006 the National Institutes of Health announced an initiative to coordinate work between the National Cancer Institute and the National Human Genome Research Institute taking information about the human genome and analyzing it for key genomic alterations found in 33 common cancers. These data were combined with clinical information (such as survival) to classify the behaviors of those cancers with respect to their individual genomic alternations, in order to look for patterns in mutations and behaviors. The goal of this analysis was to shift the paradigm of cancer classification from being centered around primary organ site toward tumors’ shared genomic patterns.

In 2013 the Cancer Genome Atlas published their results of complete gene sequencing in endometrial cancer.³ The authors identified four discrete subgroups of endometrial cancer with distinct molecular mutational profiles and distinct clinical outcomes: polymerase epsilon (POLE, pronounced “pole-ee”) ultramutated, microsatellite instability (MSI) high, copy number high, and copy number low.
 

POLE ultramutated

An important subgroup identified in the Cancer Genome Atlas was a group of patients with a POLE ultramutated state. POLE encodes for a subunit of DNA polymerase, the enzyme responsible for replicating the leading DNA strand. Nonfunctioning POLE results in proofreading errors and a subsequent ultramutated cellular state with a predominance of single nucleotide variants. POLE proofreading domain mutations in endometrial cancer and colon cancer are associated with excellent prognosis, likely secondary to the immune response that is elicited by this ultramutated state from creation of “antigenic neoepitopes” that stimulate T-cell response. Effectively, the very mutated cell is seen as “more foreign” to the body’s immune system.

Approximately 10% of patients with endometrial cancer have a POLE ultramutated state, and, as stated above, prognosis is excellent, even if coexisting with a histologic cell type (such as serous) that is normally associated with adverse outcomes. These women tend to be younger, with a lower body mass index, higher-grade endometrioid cell type, the presence of lymphovascular space invasion, and low stage.
 

MSI high

MSI (microsatellite instability) is a result of epigenetic/hypermethylations or loss of expression in mismatch repair genes (such as MLH1, MSH2, MSH6, PMS2). These genes code for proteins critical in the repair of mismatches in short repeated sequences of DNA. Loss of their function results in an accumulation of errors in these sequences: MSI. It is a feature of the Lynch syndrome inherited state, but is also found sporadically in endometrial tumors. These tumors accumulate a number of mutations during cell replication that, as in POLE hypermutated tumors, are associated with eliciting an immune response.

These tumors tend to be associated with a higher-grade endometrioid cell type, the presence of lymphovascular space invasion, and an advanced stage. Patients with tumors that have been described as MSI high are candidates for “immune therapy” with the PDL1 inhibitor pembrolizumab because of their proinflammatory state and observed favorable responses in clinical trials.⁴
 

Copy number high/low

Copy number (CN) high and low refers to the results of microarrays in which hierarchical clustering was applied to identify reoccurring amplification or deletion regions. The CN-high group was associated with the poorest outcomes (recurrence and survival). There is significant overlap with mutations in TP53. Most serous carcinomas were CN high; however, 25% of patients with high-grade endometrioid cell type shared the CN-high classification. These tumors shared great molecular similarity to high-grade serous ovarian cancers and basal-like breast cancer.

Those patients who did not possess mutations that classified them as POLE hypermutated, MSI high, or CN high were classified as CN low. This group included predominantly grades 1 and 2 endometrioid adenocarcinomas of an early stage and had a favorable prognostic profile, though less favorable than those with a POLE ultramutated state, which appears to be somewhat protective.
 

Molecular/metabolic interactions

While molecular data are clearly important in driving a cancer cell’s behavior, other clinical and metabolic factors influence cancer behavior. For example, body mass index, adiposity, glucose, and lipid metabolism have been shown to be important drivers of cellular behavior and responsiveness to targeted therapies.^5,6 Additionally age, race, and other metabolic states contribute to oncologic behavior. Future classifications of endometrial cancer are unlikely to use molecular profiles in isolation but will need to incorporate these additional patient-specific data to better predict and prognosticate outcomes.

Clinical applications

If researchers can better define and describe a patient’s endometrial cancer from the time of their biopsy, important clinical decisions might be able to be tackled. For example, in a premenopausal patient with an endometrial cancer who is considering fertility-sparing treatments, preoperative knowledge of a POLE ultramutated state (and therefore an anticipated good prognosis) might favor fertility preservation or avoid comprehensive staging which may be of limited value. Similarly, if an MSI-high profile is identified leading to a Lynch syndrome diagnosis, she may be more inclined to undergo a hysterectomy with bilateral salpingo-oophorectomy and staging as she is at known increased risk for a more advanced endometrial cancer, as well as the potential for ovarian cancer.

Postoperative incorporation of molecular data promises to be particularly helpful in guiding adjuvant therapies and sparing some women from unnecessary treatments. For example, women with high-grade endometrioid tumors who are CN high were historically treated with radiotherapy but might do better treated with systemic adjuvant therapies traditionally reserved for nonendometrioid carcinomas. Costly therapies such as immunotherapy can be directed toward those with MSI-high tumors, and the rare patient with a POLE ultramutated state who has a recurrence or advanced disease. Clinical trials will be able to cluster enrollment of patients with CN-high, serouslike cancers with those with serous cancers, rather than combining them with patients whose cancers predictably behave much differently.

Much work is still needed to validate this molecular profiling in endometrial cancer and define the algorithms associated with treatment decisions; however, it is likely that the way we describe endometrial cancer in the near future will be quite different.
 

Dr. Rossi is an assistant professor in the division of gynecologic oncology at the University of North Carolina at Chapel Hill. She has no disclosures.

References

1. Bokhman JV. Two pathogenetic types of endometrial carcinoma. Gynecol Oncol. 1983;15(1):10-7.

2. Clarke BA et al. Endometrial carcinoma: controversies in histopathological assessment of grade and tumour cell type. J Clin Pathol. 2010;63(5):410-5.

3. Cancer Genome Atlas Research Network. Integrated genomic characterization of endometrial carcinoma. Nature. 2013;497(7447):67-73.

4. Ott PA et al. Pembrolizumab in advanced endometrial cancer: Preliminary results from the phase Ib KEYNOTE-028 study. J Clin Oncol. 2016;34(suppl):Abstract 5581.

5. Roque DR et al. Association between differential gene expression and body mass index among endometrial cancers from the Cancer Genome Atlas Project. Gynecol Oncol. 2016;142(2):317-22.

6. Talhouk A et al. New classification of endometrial cancers: The development and potential applications of genomic-based classification in research and clinical care. Gynecol Oncol Res Pract. 2016 Dec;3:14.

More young women with early-stage cervical cancer are opting for fertility-sparing trachelectomy, based on a recent analysis of the National Cancer Database.

Of 15,150 patients analyzed, the vast majority (97.1%) underwent hysterectomy, but trachelectomy performance increased from 1.5% (95% confidence interval, 0.8%-2.2%; P less than .001) in 2004 to 3.8% (95% CI, 2.7%-4.8%; P less than .001) by 2014. The increase was mostly seen among women younger than 30 years old. In that group, trachelectomy increased from 4.6% (95% CI, 1.0%-8.2%; P less than .001) in 2004 to 17% (95% CI, 10.2%-23.7%; P less than .001) in 2014. Rates among women aged 30-49 years were relatively stable over the same period.

“A possible explanation for this rise in trachelectomy is the trend in delayed childbearing in women in the United States,” wrote Rosa R. Cui, MD, a resident at Columbia University, New York, and her coauthors.

In the analysis, mortality risk and 5-year survival rates were similar between the two procedures. Overall cohort 5-year survival was nearly identical with hysterectomy and trachelectomy at 92.4% and 92.3%, respectively. For stages IA2, IB1, and IB not specified, tumor stage was not associated with differences in 5-year survival for the two procedures. As few patients with stage IB2 tumors received trachelectomy, that data was excluded from the analysis.

Though increasing tumor size made trachelectomy less likely, 30% of patients in the study who underwent trachelectomy had a tumor greater than 2 cm in diameter, and 4% had a tumor greater than 4 cm in diameter. The researchers noted studies published in the past few years suggest abdominal radical trachelectomy may be a safe option for larger tumors, compared with vaginal trachelectomy. In the current analysis, they did not find a statistically significant decrease in survival for trachelectomy patients with tumors greater than 2 cm in diameter, but the sample size was small.

“The trachelectomy procedure has evolved significantly since it was initially described and now encompasses several approaches,” and can be performed more or less conservatively depending on the diagnosis “without compromising outcomes,” wrote Dr. Cui and her coauthors.

The researchers noted that the National Cancer Database does not have data on fertility outcomes, a possible focus of future studies of trachelectomy.

Two coauthors disclosed grants and a fellowship from the National Cancer Institute, and others disclosed consulting for several pharmaceutical companies including Pfizer, Teva, and Eisai.

[email protected]

SOURCE: Cui RR et al. Obstet Gynecol. 2018 Jun;131(6):1085-94.

More young women with early-stage cervical cancer are opting for fertility-sparing trachelectomy, based on a recent analysis of the National Cancer Database.

Of 15,150 patients analyzed, the vast majority (97.1%) underwent hysterectomy, but trachelectomy performance increased from 1.5% (95% confidence interval, 0.8%-2.2%; P less than .001) in 2004 to 3.8% (95% CI, 2.7%-4.8%; P less than .001) by 2014. The increase was mostly seen among women younger than 30 years old. In that group, trachelectomy increased from 4.6% (95% CI, 1.0%-8.2%; P less than .001) in 2004 to 17% (95% CI, 10.2%-23.7%; P less than .001) in 2014. Rates among women aged 30-49 years were relatively stable over the same period.

“A possible explanation for this rise in trachelectomy is the trend in delayed childbearing in women in the United States,” wrote Rosa R. Cui, MD, a resident at Columbia University, New York, and her coauthors.

In the analysis, mortality risk and 5-year survival rates were similar between the two procedures. Overall cohort 5-year survival was nearly identical with hysterectomy and trachelectomy at 92.4% and 92.3%, respectively. For stages IA2, IB1, and IB not specified, tumor stage was not associated with differences in 5-year survival for the two procedures. As few patients with stage IB2 tumors received trachelectomy, that data was excluded from the analysis.

Though increasing tumor size made trachelectomy less likely, 30% of patients in the study who underwent trachelectomy had a tumor greater than 2 cm in diameter, and 4% had a tumor greater than 4 cm in diameter. The researchers noted studies published in the past few years suggest abdominal radical trachelectomy may be a safe option for larger tumors, compared with vaginal trachelectomy. In the current analysis, they did not find a statistically significant decrease in survival for trachelectomy patients with tumors greater than 2 cm in diameter, but the sample size was small.

“The trachelectomy procedure has evolved significantly since it was initially described and now encompasses several approaches,” and can be performed more or less conservatively depending on the diagnosis “without compromising outcomes,” wrote Dr. Cui and her coauthors.

The researchers noted that the National Cancer Database does not have data on fertility outcomes, a possible focus of future studies of trachelectomy.

Two coauthors disclosed grants and a fellowship from the National Cancer Institute, and others disclosed consulting for several pharmaceutical companies including Pfizer, Teva, and Eisai.

[email protected]

SOURCE: Cui RR et al. Obstet Gynecol. 2018 Jun;131(6):1085-94.

More young women with early-stage cervical cancer are opting for fertility-sparing trachelectomy, based on a recent analysis of the National Cancer Database.

Of 15,150 patients analyzed, the vast majority (97.1%) underwent hysterectomy, but trachelectomy performance increased from 1.5% (95% confidence interval, 0.8%-2.2%; P less than .001) in 2004 to 3.8% (95% CI, 2.7%-4.8%; P less than .001) by 2014. The increase was mostly seen among women younger than 30 years old. In that group, trachelectomy increased from 4.6% (95% CI, 1.0%-8.2%; P less than .001) in 2004 to 17% (95% CI, 10.2%-23.7%; P less than .001) in 2014. Rates among women aged 30-49 years were relatively stable over the same period.

“A possible explanation for this rise in trachelectomy is the trend in delayed childbearing in women in the United States,” wrote Rosa R. Cui, MD, a resident at Columbia University, New York, and her coauthors.

In the analysis, mortality risk and 5-year survival rates were similar between the two procedures. Overall cohort 5-year survival was nearly identical with hysterectomy and trachelectomy at 92.4% and 92.3%, respectively. For stages IA2, IB1, and IB not specified, tumor stage was not associated with differences in 5-year survival for the two procedures. As few patients with stage IB2 tumors received trachelectomy, that data was excluded from the analysis.

Though increasing tumor size made trachelectomy less likely, 30% of patients in the study who underwent trachelectomy had a tumor greater than 2 cm in diameter, and 4% had a tumor greater than 4 cm in diameter. The researchers noted studies published in the past few years suggest abdominal radical trachelectomy may be a safe option for larger tumors, compared with vaginal trachelectomy. In the current analysis, they did not find a statistically significant decrease in survival for trachelectomy patients with tumors greater than 2 cm in diameter, but the sample size was small.

“The trachelectomy procedure has evolved significantly since it was initially described and now encompasses several approaches,” and can be performed more or less conservatively depending on the diagnosis “without compromising outcomes,” wrote Dr. Cui and her coauthors.

The researchers noted that the National Cancer Database does not have data on fertility outcomes, a possible focus of future studies of trachelectomy.

Two coauthors disclosed grants and a fellowship from the National Cancer Institute, and others disclosed consulting for several pharmaceutical companies including Pfizer, Teva, and Eisai.

[email protected]

SOURCE: Cui RR et al. Obstet Gynecol. 2018 Jun;131(6):1085-94.

A gynecologic surgeon learns very early in his/her career to respect the ureter. Whether from the procedure being performed (endometriosis surgery, hysterectomy, myomectomy for ligamentous fibroids, salpingo-oophorectomy, excision of ovarian remnants, adhesiolysis), blood loss that obscures visualization and must be controlled, or use of energy for cutting, desiccation, and coagulation leading to potential lateral tissue damage, ureteral injury is a well-known complication. Even normal anatomic variations may put some women at greater risk; according to Hurd et al. (Am J Obstet Gynecol. 2001;184:336-9). In a small subset of women, the distance between the cervix and the ureter may be less than 0.5 cm.

As a practicing minimally invasive gynecologic surgeon for the past 30 years, and an early adapter to laparoscopic hysterectomy, I remember quite well the recommendation to always dissect out ureters at time of the procedure. At present, most will agree that selective dissection is safe and thus, more desirable, as bleeding, damage secondary to desiccation, and ureter devascularization with subsequent necrosis are all increased with ureterolysis.

I agree with Dr. Kenton and Dr. Mueller that ureteral stenting has not been shown to significantly decrease ureteral injury rates. Often times, with loss of peristalsis secondary to stent placement, locating the ureter may be even more difficult. Recent advances using lighted stents or indocyanine green, which fluoresces in response to near-infrared laser and can be injected into the ureter via the ureteral catheter tip, are still in the feasibility phase of evaluation and can be costly.

As most urogenital fistulae are secondary to unrecognized injuries at time of surgery, and due to the fact that intraoperative recognition of the injury allows for primary repair, thus, decreasing the rate of secondary surgery and the associated increased morbidity, I recommend cystoscopy to check for ureteral jets (ureteral efflux) be performed when there is concern regarding ureter compromise.

Currently, I utilize a 70° cystoscope to visualize the ureters. While in the past, I have used intravenous indigo carmine, methylene blue, or fluorescein sodium, I currently use Pyridium (phenazopyridine) 200 mg taken by mouth 1 hour prior to the procedure.

Unfortunately, ureteral jetting still may be noted despite partial ligation, laceration, or desiccation of the ureter.

If ureteral injury is not recognized at time of surgery, it can lead to various postoperative symptoms. If there is a ureteral defect, the patient may note profuse wound leakage, increased abdominal fluid, or a urinoma, ileus, fever, peritonitis, or hematuria. With ureteral obstruction, flank or abdominal pain or anuria can be noted; while, with fistula formation, the patient will likely present with urinary incontinence or watery vaginal discharge.

Dr. Miller is a minimally invasive gynecologic surgeon in Naperville, Ill., and a past president of the AAGL.

A gynecologic surgeon learns very early in his/her career to respect the ureter. Whether from the procedure being performed (endometriosis surgery, hysterectomy, myomectomy for ligamentous fibroids, salpingo-oophorectomy, excision of ovarian remnants, adhesiolysis), blood loss that obscures visualization and must be controlled, or use of energy for cutting, desiccation, and coagulation leading to potential lateral tissue damage, ureteral injury is a well-known complication. Even normal anatomic variations may put some women at greater risk; according to Hurd et al. (Am J Obstet Gynecol. 2001;184:336-9). In a small subset of women, the distance between the cervix and the ureter may be less than 0.5 cm.

As a practicing minimally invasive gynecologic surgeon for the past 30 years, and an early adapter to laparoscopic hysterectomy, I remember quite well the recommendation to always dissect out ureters at time of the procedure. At present, most will agree that selective dissection is safe and thus, more desirable, as bleeding, damage secondary to desiccation, and ureter devascularization with subsequent necrosis are all increased with ureterolysis.

I agree with Dr. Kenton and Dr. Mueller that ureteral stenting has not been shown to significantly decrease ureteral injury rates. Often times, with loss of peristalsis secondary to stent placement, locating the ureter may be even more difficult. Recent advances using lighted stents or indocyanine green, which fluoresces in response to near-infrared laser and can be injected into the ureter via the ureteral catheter tip, are still in the feasibility phase of evaluation and can be costly.

As most urogenital fistulae are secondary to unrecognized injuries at time of surgery, and due to the fact that intraoperative recognition of the injury allows for primary repair, thus, decreasing the rate of secondary surgery and the associated increased morbidity, I recommend cystoscopy to check for ureteral jets (ureteral efflux) be performed when there is concern regarding ureter compromise.

Currently, I utilize a 70° cystoscope to visualize the ureters. While in the past, I have used intravenous indigo carmine, methylene blue, or fluorescein sodium, I currently use Pyridium (phenazopyridine) 200 mg taken by mouth 1 hour prior to the procedure.

Unfortunately, ureteral jetting still may be noted despite partial ligation, laceration, or desiccation of the ureter.

If ureteral injury is not recognized at time of surgery, it can lead to various postoperative symptoms. If there is a ureteral defect, the patient may note profuse wound leakage, increased abdominal fluid, or a urinoma, ileus, fever, peritonitis, or hematuria. With ureteral obstruction, flank or abdominal pain or anuria can be noted; while, with fistula formation, the patient will likely present with urinary incontinence or watery vaginal discharge.

Dr. Miller is a minimally invasive gynecologic surgeon in Naperville, Ill., and a past president of the AAGL.

A gynecologic surgeon learns very early in his/her career to respect the ureter. Whether from the procedure being performed (endometriosis surgery, hysterectomy, myomectomy for ligamentous fibroids, salpingo-oophorectomy, excision of ovarian remnants, adhesiolysis), blood loss that obscures visualization and must be controlled, or use of energy for cutting, desiccation, and coagulation leading to potential lateral tissue damage, ureteral injury is a well-known complication. Even normal anatomic variations may put some women at greater risk; according to Hurd et al. (Am J Obstet Gynecol. 2001;184:336-9). In a small subset of women, the distance between the cervix and the ureter may be less than 0.5 cm.

As a practicing minimally invasive gynecologic surgeon for the past 30 years, and an early adapter to laparoscopic hysterectomy, I remember quite well the recommendation to always dissect out ureters at time of the procedure. At present, most will agree that selective dissection is safe and thus, more desirable, as bleeding, damage secondary to desiccation, and ureter devascularization with subsequent necrosis are all increased with ureterolysis.

I agree with Dr. Kenton and Dr. Mueller that ureteral stenting has not been shown to significantly decrease ureteral injury rates. Often times, with loss of peristalsis secondary to stent placement, locating the ureter may be even more difficult. Recent advances using lighted stents or indocyanine green, which fluoresces in response to near-infrared laser and can be injected into the ureter via the ureteral catheter tip, are still in the feasibility phase of evaluation and can be costly.

As most urogenital fistulae are secondary to unrecognized injuries at time of surgery, and due to the fact that intraoperative recognition of the injury allows for primary repair, thus, decreasing the rate of secondary surgery and the associated increased morbidity, I recommend cystoscopy to check for ureteral jets (ureteral efflux) be performed when there is concern regarding ureter compromise.

Currently, I utilize a 70° cystoscope to visualize the ureters. While in the past, I have used intravenous indigo carmine, methylene blue, or fluorescein sodium, I currently use Pyridium (phenazopyridine) 200 mg taken by mouth 1 hour prior to the procedure.

Unfortunately, ureteral jetting still may be noted despite partial ligation, laceration, or desiccation of the ureter.

If ureteral injury is not recognized at time of surgery, it can lead to various postoperative symptoms. If there is a ureteral defect, the patient may note profuse wound leakage, increased abdominal fluid, or a urinoma, ileus, fever, peritonitis, or hematuria. With ureteral obstruction, flank or abdominal pain or anuria can be noted; while, with fistula formation, the patient will likely present with urinary incontinence or watery vaginal discharge.

Dr. Miller is a minimally invasive gynecologic surgeon in Naperville, Ill., and a past president of the AAGL.

ORLANDO – Cell salvage may help reduce the need for allogeneic blood transfusion in patients undergoing abdominal myomectomy, according to findings from a retrospective cohort study.

Of 138 women who underwent abdominal myomectomy, 52 had no cell salvage and 86 had cell salvage ordered. Of those who had cell salvage ordered, 60 had salvage fully set up and 26 had salvage on standby; 46 of the 60 with full set-up had autologous blood returned, and of those, 14 required subsequent allogeneic transfusion of more than 20 U of blood, Julian A. Gingold, MD, reported at the annual scientific meeting of the Society of Gynecologic Surgeons.

Sharon Worcester/MDedge News

“If you take these 86 patients who had cell salvage intraoperatively, 14 of them ultimately required donor blood, and that amounted to 23 units, giving kind of a lower limit for the potential benefit of cell salvage in this patient cohort,” he said.

Abdominal myomectomy often has a high rate of blood loss, with about a 10%-20% rate of transfusion. While the technique of cell salvage is widely used in other fields, it hasn’t been fully investigated in the context of gynecologic surgery, he said, explaining the rationale for the study.

Subjects included were women aged 18-60 years who underwent abdominal myomectomy for benign indications at the Cleveland Clinic during 2011-2016. Those with current malignancy or with surgery performed by a gynecologic oncologist were excluded.

The non–cell salvage and cell salvage groups were comparable with respect to age, body mass index, ethnicity, and preoperative and postoperative hemoglobin.

Dr. Gingold noted that “prospective study with randomization will be required to better define the role of cell salvage in abdominal myomectomies.”

During a question and answer session following his presentation, Charles Ascher-Walsh, MD, of Mount Sinai Health System, N.Y. noted that the transfusion rates and blood loss were high in the study, and that solid data support the use of tourniquets for patients undergoing abdominal myomectomy, with studies showing only a 1%-2% transfusion rate with continuous tourniquet use. Dr. Gingold said the use of tourniquets in the study was low and was dictated by surgeon preference. He agreed that tourniquet use is “certainly an option that should be adjunctive,” and that it would be useful to look at the outcomes in the cases with and without tourniquet use.

Dr. Gingold reported having no disclosures.

[email protected]

SOURCE: Gingold J et al. SGS 2018 Oral Poster 18.

ORLANDO – Cell salvage may help reduce the need for allogeneic blood transfusion in patients undergoing abdominal myomectomy, according to findings from a retrospective cohort study.

Of 138 women who underwent abdominal myomectomy, 52 had no cell salvage and 86 had cell salvage ordered. Of those who had cell salvage ordered, 60 had salvage fully set up and 26 had salvage on standby; 46 of the 60 with full set-up had autologous blood returned, and of those, 14 required subsequent allogeneic transfusion of more than 20 U of blood, Julian A. Gingold, MD, reported at the annual scientific meeting of the Society of Gynecologic Surgeons.

Sharon Worcester/MDedge News

“If you take these 86 patients who had cell salvage intraoperatively, 14 of them ultimately required donor blood, and that amounted to 23 units, giving kind of a lower limit for the potential benefit of cell salvage in this patient cohort,” he said.

Abdominal myomectomy often has a high rate of blood loss, with about a 10%-20% rate of transfusion. While the technique of cell salvage is widely used in other fields, it hasn’t been fully investigated in the context of gynecologic surgery, he said, explaining the rationale for the study.

Subjects included were women aged 18-60 years who underwent abdominal myomectomy for benign indications at the Cleveland Clinic during 2011-2016. Those with current malignancy or with surgery performed by a gynecologic oncologist were excluded.

The non–cell salvage and cell salvage groups were comparable with respect to age, body mass index, ethnicity, and preoperative and postoperative hemoglobin.

Dr. Gingold noted that “prospective study with randomization will be required to better define the role of cell salvage in abdominal myomectomies.”

During a question and answer session following his presentation, Charles Ascher-Walsh, MD, of Mount Sinai Health System, N.Y. noted that the transfusion rates and blood loss were high in the study, and that solid data support the use of tourniquets for patients undergoing abdominal myomectomy, with studies showing only a 1%-2% transfusion rate with continuous tourniquet use. Dr. Gingold said the use of tourniquets in the study was low and was dictated by surgeon preference. He agreed that tourniquet use is “certainly an option that should be adjunctive,” and that it would be useful to look at the outcomes in the cases with and without tourniquet use.

Dr. Gingold reported having no disclosures.

[email protected]

SOURCE: Gingold J et al. SGS 2018 Oral Poster 18.

ORLANDO – Cell salvage may help reduce the need for allogeneic blood transfusion in patients undergoing abdominal myomectomy, according to findings from a retrospective cohort study.

Of 138 women who underwent abdominal myomectomy, 52 had no cell salvage and 86 had cell salvage ordered. Of those who had cell salvage ordered, 60 had salvage fully set up and 26 had salvage on standby; 46 of the 60 with full set-up had autologous blood returned, and of those, 14 required subsequent allogeneic transfusion of more than 20 U of blood, Julian A. Gingold, MD, reported at the annual scientific meeting of the Society of Gynecologic Surgeons.

Sharon Worcester/MDedge News

“If you take these 86 patients who had cell salvage intraoperatively, 14 of them ultimately required donor blood, and that amounted to 23 units, giving kind of a lower limit for the potential benefit of cell salvage in this patient cohort,” he said.

Abdominal myomectomy often has a high rate of blood loss, with about a 10%-20% rate of transfusion. While the technique of cell salvage is widely used in other fields, it hasn’t been fully investigated in the context of gynecologic surgery, he said, explaining the rationale for the study.

Subjects included were women aged 18-60 years who underwent abdominal myomectomy for benign indications at the Cleveland Clinic during 2011-2016. Those with current malignancy or with surgery performed by a gynecologic oncologist were excluded.

The non–cell salvage and cell salvage groups were comparable with respect to age, body mass index, ethnicity, and preoperative and postoperative hemoglobin.

Dr. Gingold noted that “prospective study with randomization will be required to better define the role of cell salvage in abdominal myomectomies.”

During a question and answer session following his presentation, Charles Ascher-Walsh, MD, of Mount Sinai Health System, N.Y. noted that the transfusion rates and blood loss were high in the study, and that solid data support the use of tourniquets for patients undergoing abdominal myomectomy, with studies showing only a 1%-2% transfusion rate with continuous tourniquet use. Dr. Gingold said the use of tourniquets in the study was low and was dictated by surgeon preference. He agreed that tourniquet use is “certainly an option that should be adjunctive,” and that it would be useful to look at the outcomes in the cases with and without tourniquet use.

Dr. Gingold reported having no disclosures.

[email protected]

SOURCE: Gingold J et al. SGS 2018 Oral Poster 18.

One-quarter of patients with breast cancer are diagnosed at a premenopausal age and these young women may be directed to discuss oophorectomy with their ob.gyn. This may be because of the discovery of a deleterious BRCA gene mutation, which places them at increased risk for ovarian cancer, but oophorectomy may also be a therapeutic option for their breast cancer: 60% of premenopausal breast cancers are hormone receptor–positive. Ovarian ablation has been associated with improved overall survival and disease-free survival among these patients.¹

Estrogen is an important promoter of breast cancer and is predominantly derived from ovarian tissue in premenopausal women. However, in postmenopausal women, the majority of estrogen is produced peripherally through the conversion of androgens to estrogen via the enzyme aromatase. Aromatase inhibitors, such as exemestane, anastrazole, and letrazole, are drugs which block this conversion in peripheral tissues. They are contraindicated in premenopausal women with intact ovarian function, because there is a reflex pituitary stimulation of ovarian estrogen release in response to suppression of peripheral conversion of androgens. For such patients, ovarian function must be ablated either with surgery or with gonadotropin-releasing hormone (GnRH) analogues such as leuprorelin and goserelin if aromatase inhibitors are desired.

BRCA populations

For women with BRCA germline mutations and a history of breast cancer, oophorectomy is associated with a 70% risk of all-cause mortality, including a 60% reduction in breast cancer mortality. This effect is inclusive of patients with “triple-negative,” hormone receptor–negative tumors. The positive effect on breast cancer mortality is predominantly seen among BRCA-1 mutation carriers, and if the oophorectomy is performed within 2 years of diagnosis.⁵

Technique

When performing oophorectomy either for breast cancer or because of a hereditary cancer syndrome such as BRCA mutation, it is important to ensure that the ovarian vessel pedicle is transected at least 2 cm from its insertion in the ovary. This prevents leaving a residual ovarian remnant. In order to do this, it may be necessary to skeletonize the ovarian vessels free from their physiological attachments to the sigmoid colon on the left, and terminal ileum and cecum on the right. It is also important to ensure that the ureter is not invested in this more proximal segment of ovarian vessels. To prevent this, the retroperitoneal space can be opened lateral to and parallel with the ovarian vessels, and the “medial leaf” of the broad ligament swept medially to expose the ureter as it crosses the bifurcation of the external and internal iliac arteries at the pelvic brim. With the ureter in view, a window can then be made in the “medial leaf” above the ureter and below the ovary and ovarian vessels, in doing so creating a skeletonized ovarian vessel segment which can be sealed and cut 2 cm or more from its insertion in the ovary.

The fallopian tubes should be removed with the ovarian specimens, with attention made to removing the fallopian tube at its junction with the uterine cornua. It should be noted that the majority of fallopian tube cancers arise in the fimbriated end of the tube, and cornual tubal malignancies are fairly uncommon.

The decision about whether or not to perform hysterectomy at the time of salpingo-oophorectomy is complex. In patients without hereditary cancer syndromes, such as BRCA or Lynch syndrome, hysterectomy likely offers no benefit to the patient who is undergoing a procedure for the purpose of ovarian ablation. An argument has been made that hysterectomy can eliminate the increased endometrial cancer risk associated with tamoxifen. However, given the previously discussed data, after oophorectomy, aromatase inhibitors are the preferred treatment option, and tamoxifen can be avoided. If a patient has unrelated underlying uterine pathology a hysterectomy might be indicated. Women with BRCA germline mutations, particularly women with BRCA-1 mutations, may be at increased risk for uterine serous carcinoma, and in these patients, hysterectomy at the time of oophorectomy can be discussed and offered, though as yet, it is not a guideline recommendation for all patients.⁶ Patients who ask to “just take everything out while you are there” without a clear indication for hysterectomy should be counseled that hysterectomy is associated with increased risk, recovery, and cost, compared with bilateral salpingo-oophorectomy. Among patients with elevated surgical risk (such as morbid obesity, known adhesive disease, increased venous thromboembolism risk, diabetes, and so on) it may not always be appropriate to extend the complexity of the procedure given the limited benefit.

Consequences of ovarian ablation

It should be noted that ovarian ablation in the TEXT and SOFT trials was not associated with an increase in overall survival for women with premenopausal breast cancer. Alternatively, large, observational studies such as the Nurses’ Health Study have shown that premenopausal oophorectomy without hormone replacement therapy is associated with increased all-cause mortality. This is primarily driven by the increased cardiopulmonary risk (heart attack and stroke), deaths after osteoporotic hip fractures, and the increased risk for lung and colon cancer.^7,8

It is normal for young patients to have heightened concerns regarding their risk of recurrence from their cancer, and less concerned by threats to their health in decades to come. However, it is important to discuss this data with the patient and allow for her to make an informed decision about her immediate versus future risks. If she determines that she is not interested in permanent ovarian ablation with oophorectomy because of either surgical risks, concerns regarding permanent infertility, or increased all-cause mortality, she still has an option for medical ovarian ablation with GnRH analogues in the treatment of her breast cancer.

Hormone replacement therapy postoperatively

Women who undergo oophorectomy for the treatment of breast cancer should not be offered hormone replacement therapy. This is true even for “triple-negative” or hormone receptor–negative breast cancers as there is still some observed benefit of ovarian ablation, and risk from exogenous hormone administration in these women. Alternatively, postoperative hormone replacement therapy remains safe until the age of natural menopause among premenopausal patients with BRCA germline mutations without a preceding breast cancer diagnosis.

Surgical ovarian ablation with bilateral salpingo-oophorectomy is a valuable strategy in the adjuvant therapy of premenopausal breast cancer, particularly among BRCA mutation carriers and women with hormone receptor–positive disease, or among women who find adherence to medical ablation difficult. Patients should be carefully counseled that this may introduce increased long-term cardiovascular risks for them.

Dr. Rossi is an assistant professor in the division of gynecologic oncology at the University of North Carolina at Chapel Hill.

References

1. Early Breast Cancer Trialists’ Collaborative Group. Lancet. 1996 Nov 2;348:1189-96.

2. Pagani O et al. N Engl J Med. 2014 Jul 10;371(12):107-18.

3. Francis PA et al. N Engl J Med. 2015 Jan 29;372(5):436-46.

4. Ferrandina G et al. Clin Drug Investig. 2017 Nov;37(11):1093-102.

5. Finch AP et al. J Clin Oncol. 2014 May 20;32(15):1547-53.

6. Shu CA et al. JAMA Oncol. 2016 Nov 1;2(11):1434-40.

7. Parker WH et al. Obstet Gynecol. 2013 Apr;121(4):709-16.

8. Rivera CM et al. Menopause. 2009 Jan-Feb;16:15-23.

One-quarter of patients with breast cancer are diagnosed at a premenopausal age and these young women may be directed to discuss oophorectomy with their ob.gyn. This may be because of the discovery of a deleterious BRCA gene mutation, which places them at increased risk for ovarian cancer, but oophorectomy may also be a therapeutic option for their breast cancer: 60% of premenopausal breast cancers are hormone receptor–positive. Ovarian ablation has been associated with improved overall survival and disease-free survival among these patients.¹

Estrogen is an important promoter of breast cancer and is predominantly derived from ovarian tissue in premenopausal women. However, in postmenopausal women, the majority of estrogen is produced peripherally through the conversion of androgens to estrogen via the enzyme aromatase. Aromatase inhibitors, such as exemestane, anastrazole, and letrazole, are drugs which block this conversion in peripheral tissues. They are contraindicated in premenopausal women with intact ovarian function, because there is a reflex pituitary stimulation of ovarian estrogen release in response to suppression of peripheral conversion of androgens. For such patients, ovarian function must be ablated either with surgery or with gonadotropin-releasing hormone (GnRH) analogues such as leuprorelin and goserelin if aromatase inhibitors are desired.

BRCA populations

For women with BRCA germline mutations and a history of breast cancer, oophorectomy is associated with a 70% risk of all-cause mortality, including a 60% reduction in breast cancer mortality. This effect is inclusive of patients with “triple-negative,” hormone receptor–negative tumors. The positive effect on breast cancer mortality is predominantly seen among BRCA-1 mutation carriers, and if the oophorectomy is performed within 2 years of diagnosis.⁵

Technique

When performing oophorectomy either for breast cancer or because of a hereditary cancer syndrome such as BRCA mutation, it is important to ensure that the ovarian vessel pedicle is transected at least 2 cm from its insertion in the ovary. This prevents leaving a residual ovarian remnant. In order to do this, it may be necessary to skeletonize the ovarian vessels free from their physiological attachments to the sigmoid colon on the left, and terminal ileum and cecum on the right. It is also important to ensure that the ureter is not invested in this more proximal segment of ovarian vessels. To prevent this, the retroperitoneal space can be opened lateral to and parallel with the ovarian vessels, and the “medial leaf” of the broad ligament swept medially to expose the ureter as it crosses the bifurcation of the external and internal iliac arteries at the pelvic brim. With the ureter in view, a window can then be made in the “medial leaf” above the ureter and below the ovary and ovarian vessels, in doing so creating a skeletonized ovarian vessel segment which can be sealed and cut 2 cm or more from its insertion in the ovary.

The fallopian tubes should be removed with the ovarian specimens, with attention made to removing the fallopian tube at its junction with the uterine cornua. It should be noted that the majority of fallopian tube cancers arise in the fimbriated end of the tube, and cornual tubal malignancies are fairly uncommon.

The decision about whether or not to perform hysterectomy at the time of salpingo-oophorectomy is complex. In patients without hereditary cancer syndromes, such as BRCA or Lynch syndrome, hysterectomy likely offers no benefit to the patient who is undergoing a procedure for the purpose of ovarian ablation. An argument has been made that hysterectomy can eliminate the increased endometrial cancer risk associated with tamoxifen. However, given the previously discussed data, after oophorectomy, aromatase inhibitors are the preferred treatment option, and tamoxifen can be avoided. If a patient has unrelated underlying uterine pathology a hysterectomy might be indicated. Women with BRCA germline mutations, particularly women with BRCA-1 mutations, may be at increased risk for uterine serous carcinoma, and in these patients, hysterectomy at the time of oophorectomy can be discussed and offered, though as yet, it is not a guideline recommendation for all patients.⁶ Patients who ask to “just take everything out while you are there” without a clear indication for hysterectomy should be counseled that hysterectomy is associated with increased risk, recovery, and cost, compared with bilateral salpingo-oophorectomy. Among patients with elevated surgical risk (such as morbid obesity, known adhesive disease, increased venous thromboembolism risk, diabetes, and so on) it may not always be appropriate to extend the complexity of the procedure given the limited benefit.

Consequences of ovarian ablation

It should be noted that ovarian ablation in the TEXT and SOFT trials was not associated with an increase in overall survival for women with premenopausal breast cancer. Alternatively, large, observational studies such as the Nurses’ Health Study have shown that premenopausal oophorectomy without hormone replacement therapy is associated with increased all-cause mortality. This is primarily driven by the increased cardiopulmonary risk (heart attack and stroke), deaths after osteoporotic hip fractures, and the increased risk for lung and colon cancer.^7,8

It is normal for young patients to have heightened concerns regarding their risk of recurrence from their cancer, and less concerned by threats to their health in decades to come. However, it is important to discuss this data with the patient and allow for her to make an informed decision about her immediate versus future risks. If she determines that she is not interested in permanent ovarian ablation with oophorectomy because of either surgical risks, concerns regarding permanent infertility, or increased all-cause mortality, she still has an option for medical ovarian ablation with GnRH analogues in the treatment of her breast cancer.

Hormone replacement therapy postoperatively

Women who undergo oophorectomy for the treatment of breast cancer should not be offered hormone replacement therapy. This is true even for “triple-negative” or hormone receptor–negative breast cancers as there is still some observed benefit of ovarian ablation, and risk from exogenous hormone administration in these women. Alternatively, postoperative hormone replacement therapy remains safe until the age of natural menopause among premenopausal patients with BRCA germline mutations without a preceding breast cancer diagnosis.

Surgical ovarian ablation with bilateral salpingo-oophorectomy is a valuable strategy in the adjuvant therapy of premenopausal breast cancer, particularly among BRCA mutation carriers and women with hormone receptor–positive disease, or among women who find adherence to medical ablation difficult. Patients should be carefully counseled that this may introduce increased long-term cardiovascular risks for them.

Dr. Rossi is an assistant professor in the division of gynecologic oncology at the University of North Carolina at Chapel Hill.

References

1. Early Breast Cancer Trialists’ Collaborative Group. Lancet. 1996 Nov 2;348:1189-96.

2. Pagani O et al. N Engl J Med. 2014 Jul 10;371(12):107-18.

3. Francis PA et al. N Engl J Med. 2015 Jan 29;372(5):436-46.

4. Ferrandina G et al. Clin Drug Investig. 2017 Nov;37(11):1093-102.

5. Finch AP et al. J Clin Oncol. 2014 May 20;32(15):1547-53.

6. Shu CA et al. JAMA Oncol. 2016 Nov 1;2(11):1434-40.

7. Parker WH et al. Obstet Gynecol. 2013 Apr;121(4):709-16.

8. Rivera CM et al. Menopause. 2009 Jan-Feb;16:15-23.

One-quarter of patients with breast cancer are diagnosed at a premenopausal age and these young women may be directed to discuss oophorectomy with their ob.gyn. This may be because of the discovery of a deleterious BRCA gene mutation, which places them at increased risk for ovarian cancer, but oophorectomy may also be a therapeutic option for their breast cancer: 60% of premenopausal breast cancers are hormone receptor–positive. Ovarian ablation has been associated with improved overall survival and disease-free survival among these patients.¹

Estrogen is an important promoter of breast cancer and is predominantly derived from ovarian tissue in premenopausal women. However, in postmenopausal women, the majority of estrogen is produced peripherally through the conversion of androgens to estrogen via the enzyme aromatase. Aromatase inhibitors, such as exemestane, anastrazole, and letrazole, are drugs which block this conversion in peripheral tissues. They are contraindicated in premenopausal women with intact ovarian function, because there is a reflex pituitary stimulation of ovarian estrogen release in response to suppression of peripheral conversion of androgens. For such patients, ovarian function must be ablated either with surgery or with gonadotropin-releasing hormone (GnRH) analogues such as leuprorelin and goserelin if aromatase inhibitors are desired.

BRCA populations

For women with BRCA germline mutations and a history of breast cancer, oophorectomy is associated with a 70% risk of all-cause mortality, including a 60% reduction in breast cancer mortality. This effect is inclusive of patients with “triple-negative,” hormone receptor–negative tumors. The positive effect on breast cancer mortality is predominantly seen among BRCA-1 mutation carriers, and if the oophorectomy is performed within 2 years of diagnosis.⁵

Technique

When performing oophorectomy either for breast cancer or because of a hereditary cancer syndrome such as BRCA mutation, it is important to ensure that the ovarian vessel pedicle is transected at least 2 cm from its insertion in the ovary. This prevents leaving a residual ovarian remnant. In order to do this, it may be necessary to skeletonize the ovarian vessels free from their physiological attachments to the sigmoid colon on the left, and terminal ileum and cecum on the right. It is also important to ensure that the ureter is not invested in this more proximal segment of ovarian vessels. To prevent this, the retroperitoneal space can be opened lateral to and parallel with the ovarian vessels, and the “medial leaf” of the broad ligament swept medially to expose the ureter as it crosses the bifurcation of the external and internal iliac arteries at the pelvic brim. With the ureter in view, a window can then be made in the “medial leaf” above the ureter and below the ovary and ovarian vessels, in doing so creating a skeletonized ovarian vessel segment which can be sealed and cut 2 cm or more from its insertion in the ovary.

The fallopian tubes should be removed with the ovarian specimens, with attention made to removing the fallopian tube at its junction with the uterine cornua. It should be noted that the majority of fallopian tube cancers arise in the fimbriated end of the tube, and cornual tubal malignancies are fairly uncommon.

The decision about whether or not to perform hysterectomy at the time of salpingo-oophorectomy is complex. In patients without hereditary cancer syndromes, such as BRCA or Lynch syndrome, hysterectomy likely offers no benefit to the patient who is undergoing a procedure for the purpose of ovarian ablation. An argument has been made that hysterectomy can eliminate the increased endometrial cancer risk associated with tamoxifen. However, given the previously discussed data, after oophorectomy, aromatase inhibitors are the preferred treatment option, and tamoxifen can be avoided. If a patient has unrelated underlying uterine pathology a hysterectomy might be indicated. Women with BRCA germline mutations, particularly women with BRCA-1 mutations, may be at increased risk for uterine serous carcinoma, and in these patients, hysterectomy at the time of oophorectomy can be discussed and offered, though as yet, it is not a guideline recommendation for all patients.⁶ Patients who ask to “just take everything out while you are there” without a clear indication for hysterectomy should be counseled that hysterectomy is associated with increased risk, recovery, and cost, compared with bilateral salpingo-oophorectomy. Among patients with elevated surgical risk (such as morbid obesity, known adhesive disease, increased venous thromboembolism risk, diabetes, and so on) it may not always be appropriate to extend the complexity of the procedure given the limited benefit.

Consequences of ovarian ablation

It should be noted that ovarian ablation in the TEXT and SOFT trials was not associated with an increase in overall survival for women with premenopausal breast cancer. Alternatively, large, observational studies such as the Nurses’ Health Study have shown that premenopausal oophorectomy without hormone replacement therapy is associated with increased all-cause mortality. This is primarily driven by the increased cardiopulmonary risk (heart attack and stroke), deaths after osteoporotic hip fractures, and the increased risk for lung and colon cancer.^7,8

It is normal for young patients to have heightened concerns regarding their risk of recurrence from their cancer, and less concerned by threats to their health in decades to come. However, it is important to discuss this data with the patient and allow for her to make an informed decision about her immediate versus future risks. If she determines that she is not interested in permanent ovarian ablation with oophorectomy because of either surgical risks, concerns regarding permanent infertility, or increased all-cause mortality, she still has an option for medical ovarian ablation with GnRH analogues in the treatment of her breast cancer.

Hormone replacement therapy postoperatively

Women who undergo oophorectomy for the treatment of breast cancer should not be offered hormone replacement therapy. This is true even for “triple-negative” or hormone receptor–negative breast cancers as there is still some observed benefit of ovarian ablation, and risk from exogenous hormone administration in these women. Alternatively, postoperative hormone replacement therapy remains safe until the age of natural menopause among premenopausal patients with BRCA germline mutations without a preceding breast cancer diagnosis.

Surgical ovarian ablation with bilateral salpingo-oophorectomy is a valuable strategy in the adjuvant therapy of premenopausal breast cancer, particularly among BRCA mutation carriers and women with hormone receptor–positive disease, or among women who find adherence to medical ablation difficult. Patients should be carefully counseled that this may introduce increased long-term cardiovascular risks for them.

Dr. Rossi is an assistant professor in the division of gynecologic oncology at the University of North Carolina at Chapel Hill.

References

1. Early Breast Cancer Trialists’ Collaborative Group. Lancet. 1996 Nov 2;348:1189-96.

2. Pagani O et al. N Engl J Med. 2014 Jul 10;371(12):107-18.

3. Francis PA et al. N Engl J Med. 2015 Jan 29;372(5):436-46.

4. Ferrandina G et al. Clin Drug Investig. 2017 Nov;37(11):1093-102.

5. Finch AP et al. J Clin Oncol. 2014 May 20;32(15):1547-53.

6. Shu CA et al. JAMA Oncol. 2016 Nov 1;2(11):1434-40.

7. Parker WH et al. Obstet Gynecol. 2013 Apr;121(4):709-16.

8. Rivera CM et al. Menopause. 2009 Jan-Feb;16:15-23.

SAN FRANCISCO – Stress urinary incontinence (SUI) following removal of a mid-urethral sling (MUS) mesh is not necessarily associated with increased risk of postsurgical urinary incontinence, according to a retrospective study at a high-volume, tertiary medical center.

Follow-up procedures occurred more often in women with preoperative urodynamic SUI and less often in women who were stress continent.

Jim Kling/MDedge

Among women who were stress continent, obesity and postmenopausal status were linked to postsurgical SUI. There was no association between postsurgical SUI and the extent of mesh excision or prior revisions.

The study grew out of observations that SUI occurred less often than expected.

“There’s an increasing recognition of complications related to synthetic MUS,” said Janine Oliver, MD, who presented the study at the annual meeting of the American Urological Association. “As mesh removal procedures were being performed, we assumed that the majority of patients, if not all, would be incontinent afterward, since we were removing the sling that was put in to fix stress incontinence in most cases.”

In a patient who would benefit from a complete mesh removal, “the fear that it may lead to a higher risk of urinary incontinence is not a good justification to not do it,” Dr. Oliver said. She did note, however, that the procedures were done by specialists, so findings may not be applicable to general practitioners.

The study was performed while Dr. Oliver was a fellow at the University of California, Los Angeles. She is now with the division of urology at the University of Colorado, Anschutz, in Aurora.

SOURCE: Oliver J et al. AUA Annual Meeting. Abstract PD05-10.

SAN FRANCISCO – Stress urinary incontinence (SUI) following removal of a mid-urethral sling (MUS) mesh is not necessarily associated with increased risk of postsurgical urinary incontinence, according to a retrospective study at a high-volume, tertiary medical center.

Follow-up procedures occurred more often in women with preoperative urodynamic SUI and less often in women who were stress continent.

Jim Kling/MDedge

Among women who were stress continent, obesity and postmenopausal status were linked to postsurgical SUI. There was no association between postsurgical SUI and the extent of mesh excision or prior revisions.

The study grew out of observations that SUI occurred less often than expected.

“There’s an increasing recognition of complications related to synthetic MUS,” said Janine Oliver, MD, who presented the study at the annual meeting of the American Urological Association. “As mesh removal procedures were being performed, we assumed that the majority of patients, if not all, would be incontinent afterward, since we were removing the sling that was put in to fix stress incontinence in most cases.”

In a patient who would benefit from a complete mesh removal, “the fear that it may lead to a higher risk of urinary incontinence is not a good justification to not do it,” Dr. Oliver said. She did note, however, that the procedures were done by specialists, so findings may not be applicable to general practitioners.

The study was performed while Dr. Oliver was a fellow at the University of California, Los Angeles. She is now with the division of urology at the University of Colorado, Anschutz, in Aurora.

SOURCE: Oliver J et al. AUA Annual Meeting. Abstract PD05-10.

SAN FRANCISCO – Stress urinary incontinence (SUI) following removal of a mid-urethral sling (MUS) mesh is not necessarily associated with increased risk of postsurgical urinary incontinence, according to a retrospective study at a high-volume, tertiary medical center.

Follow-up procedures occurred more often in women with preoperative urodynamic SUI and less often in women who were stress continent.

Jim Kling/MDedge

Among women who were stress continent, obesity and postmenopausal status were linked to postsurgical SUI. There was no association between postsurgical SUI and the extent of mesh excision or prior revisions.

The study grew out of observations that SUI occurred less often than expected.

“There’s an increasing recognition of complications related to synthetic MUS,” said Janine Oliver, MD, who presented the study at the annual meeting of the American Urological Association. “As mesh removal procedures were being performed, we assumed that the majority of patients, if not all, would be incontinent afterward, since we were removing the sling that was put in to fix stress incontinence in most cases.”

In a patient who would benefit from a complete mesh removal, “the fear that it may lead to a higher risk of urinary incontinence is not a good justification to not do it,” Dr. Oliver said. She did note, however, that the procedures were done by specialists, so findings may not be applicable to general practitioners.

The study was performed while Dr. Oliver was a fellow at the University of California, Los Angeles. She is now with the division of urology at the University of Colorado, Anschutz, in Aurora.

SOURCE: Oliver J et al. AUA Annual Meeting. Abstract PD05-10.

NEW ORLEANS – Leg lymphedema occurred in 19%-40% of women with a gynecologic cancer who underwent surgery with lymphadenectomy in a prospective study of 821 U.S. patients.

The incidence of lymphedema of the lower extremity (LLE) during 2 years of follow-up was 18% among 672 endometrial cancer patients, 25% among 124 cervical cancer patients, and 40% among 24 vulvar cancer patients, Jay W. Carlson, DO, said at the annual meeting of the Society of Gynecologic Oncology.

Although the study followed patients for 2 years after surgery, 84% of the LLE events occurred within the first 6 months after surgery, and 95% within the first 12 months. The robust incidence rates documented in this study contrasted with a general perception that LLE is relatively uncommon, leading Dr. Carlson to note that the new data show “the incidence of LLE is under recognized.” The findings also bucked conventional wisdom by showing no link between the incidence of LLE and number of lymph nodes dissected or with use of radiation treatment, said Dr. Carlson, a gynecologic oncologist at Mercy Clinic Women’s Oncology in Springfield, Mo.

To better define the incidence of LLE after lymphadenectomy for gynecologic cancers, the Gynecologic Oncology Group organized the Lymphedema and Gynecologic Cancer (LEG) study, run at more than 70 U.S. centers during June 2012–November 2014. The study enrolled patients scheduled for surgery to treat endometrial, cervical, or vulvar cancer, and applied systematic leg measurement to patients just before and at several prespecified times following surgery through 2 years of follow-up.

The study began with a total of 1,054 patients, but the final analysis that Dr. Carlson presented excluded patients who did not actually undergo lymphadenectomy during their surgery, did not have leg volume data available both before and after their surgery, or had a comorbidity or change in body mass that could have caused the change in leg size. The researchers also required patients identified with LLE to have completed the Gynecologic Cancer Lymphedema Questionnaire (Gynecol Oncol. 2010 May;117[2]:317-23) and tallied a score of at least 4, and to have at least a 10% increase in leg volume at the time of diagnosis, compared with the presurgical volume.

The exclusions yielded a total of 672 patients with endometrial cancer, including 127 who developed LLE (19%); 124 patients with cervical cancer, including 31 who developed LLE (25%); and 25 patients with vulvar cancer, including 10 who developed LLE (40%), Dr. Carlson reported.

Analysis of the patients who developed LLE showed no significant association with type of surgery (open, robotic, or laparoscopic), and no significant associations with several patient-specific factors including age, race, cancer stage, surgical blood loss, or serum albumin, he said.

[email protected]

On Twitter @mitchelzoler

SOURCE: Carlson J et al. SGO 2018, Abstract 11.

NEW ORLEANS – Leg lymphedema occurred in 19%-40% of women with a gynecologic cancer who underwent surgery with lymphadenectomy in a prospective study of 821 U.S. patients.

The incidence of lymphedema of the lower extremity (LLE) during 2 years of follow-up was 18% among 672 endometrial cancer patients, 25% among 124 cervical cancer patients, and 40% among 24 vulvar cancer patients, Jay W. Carlson, DO, said at the annual meeting of the Society of Gynecologic Oncology.

Although the study followed patients for 2 years after surgery, 84% of the LLE events occurred within the first 6 months after surgery, and 95% within the first 12 months. The robust incidence rates documented in this study contrasted with a general perception that LLE is relatively uncommon, leading Dr. Carlson to note that the new data show “the incidence of LLE is under recognized.” The findings also bucked conventional wisdom by showing no link between the incidence of LLE and number of lymph nodes dissected or with use of radiation treatment, said Dr. Carlson, a gynecologic oncologist at Mercy Clinic Women’s Oncology in Springfield, Mo.

To better define the incidence of LLE after lymphadenectomy for gynecologic cancers, the Gynecologic Oncology Group organized the Lymphedema and Gynecologic Cancer (LEG) study, run at more than 70 U.S. centers during June 2012–November 2014. The study enrolled patients scheduled for surgery to treat endometrial, cervical, or vulvar cancer, and applied systematic leg measurement to patients just before and at several prespecified times following surgery through 2 years of follow-up.

The study began with a total of 1,054 patients, but the final analysis that Dr. Carlson presented excluded patients who did not actually undergo lymphadenectomy during their surgery, did not have leg volume data available both before and after their surgery, or had a comorbidity or change in body mass that could have caused the change in leg size. The researchers also required patients identified with LLE to have completed the Gynecologic Cancer Lymphedema Questionnaire (Gynecol Oncol. 2010 May;117[2]:317-23) and tallied a score of at least 4, and to have at least a 10% increase in leg volume at the time of diagnosis, compared with the presurgical volume.

The exclusions yielded a total of 672 patients with endometrial cancer, including 127 who developed LLE (19%); 124 patients with cervical cancer, including 31 who developed LLE (25%); and 25 patients with vulvar cancer, including 10 who developed LLE (40%), Dr. Carlson reported.

Analysis of the patients who developed LLE showed no significant association with type of surgery (open, robotic, or laparoscopic), and no significant associations with several patient-specific factors including age, race, cancer stage, surgical blood loss, or serum albumin, he said.

[email protected]

On Twitter @mitchelzoler

SOURCE: Carlson J et al. SGO 2018, Abstract 11.

NEW ORLEANS – Leg lymphedema occurred in 19%-40% of women with a gynecologic cancer who underwent surgery with lymphadenectomy in a prospective study of 821 U.S. patients.

The incidence of lymphedema of the lower extremity (LLE) during 2 years of follow-up was 18% among 672 endometrial cancer patients, 25% among 124 cervical cancer patients, and 40% among 24 vulvar cancer patients, Jay W. Carlson, DO, said at the annual meeting of the Society of Gynecologic Oncology.

Although the study followed patients for 2 years after surgery, 84% of the LLE events occurred within the first 6 months after surgery, and 95% within the first 12 months. The robust incidence rates documented in this study contrasted with a general perception that LLE is relatively uncommon, leading Dr. Carlson to note that the new data show “the incidence of LLE is under recognized.” The findings also bucked conventional wisdom by showing no link between the incidence of LLE and number of lymph nodes dissected or with use of radiation treatment, said Dr. Carlson, a gynecologic oncologist at Mercy Clinic Women’s Oncology in Springfield, Mo.

To better define the incidence of LLE after lymphadenectomy for gynecologic cancers, the Gynecologic Oncology Group organized the Lymphedema and Gynecologic Cancer (LEG) study, run at more than 70 U.S. centers during June 2012–November 2014. The study enrolled patients scheduled for surgery to treat endometrial, cervical, or vulvar cancer, and applied systematic leg measurement to patients just before and at several prespecified times following surgery through 2 years of follow-up.

The study began with a total of 1,054 patients, but the final analysis that Dr. Carlson presented excluded patients who did not actually undergo lymphadenectomy during their surgery, did not have leg volume data available both before and after their surgery, or had a comorbidity or change in body mass that could have caused the change in leg size. The researchers also required patients identified with LLE to have completed the Gynecologic Cancer Lymphedema Questionnaire (Gynecol Oncol. 2010 May;117[2]:317-23) and tallied a score of at least 4, and to have at least a 10% increase in leg volume at the time of diagnosis, compared with the presurgical volume.

The exclusions yielded a total of 672 patients with endometrial cancer, including 127 who developed LLE (19%); 124 patients with cervical cancer, including 31 who developed LLE (25%); and 25 patients with vulvar cancer, including 10 who developed LLE (40%), Dr. Carlson reported.

Analysis of the patients who developed LLE showed no significant association with type of surgery (open, robotic, or laparoscopic), and no significant associations with several patient-specific factors including age, race, cancer stage, surgical blood loss, or serum albumin, he said.

[email protected]

On Twitter @mitchelzoler

SOURCE: Carlson J et al. SGO 2018, Abstract 11.

LOS ANGELES – Women treated surgically and with hormones for endometriosis may continue to experience pain, say investigators, and that pain frequently extends beyond the pelvis.

At the annual meeting of the American Academy of Neurology, Barbara Karp, MD, of the National Institute of Neurological Disorders and Stroke, presented results from an ongoing randomized trial of women with endometriosis receiving botulinum toxin to treat endometriosis-related chronic pelvic pain and pelvic spasm.

designer491/Thinkstock

All subjects had myofascial dysfunction. Most reported headaches and half reported orofacial pain, while 13 subjects reported myofascial trigger points in all the 26 spots assessed, which included head and facial muscles, shoulder and back muscles, and muscles in the buttocks, abdomen, and upper legs.

Dr. Karp said her group hypothesized that for patients with endometriosis, the widespread pain seen in the study “probably has some origin in sensitization initiated by pain associated with the endometriosis lesions, and that gives us a mechanism to think about peripheral and central sensitization.” But she noted that such sensitization can be easily missed in the clinic.

“One of the things that’s really underappreciated is how much women with chronic pelvic pain have pain elsewhere. So the neurologist or pain specialist may say, ‘that’s not my body territory, there’s something going on with your pelvis.’ And the gynecologist may be focused on the endometriosis and the endometriosis lesions. So you have these women with really widespread pain problems whose care is being fractionated.”

In another aspect of the study she also presented at the meeting, Dr. Karp, a neurologist who has studied the therapeutic use of neurotoxins such as botulinum for 30 years, showed results from an open-label extension of a randomized trial of botulinum toxin injections to treat pelvic spasm in the same cohort of women with confirmed endometriosis and confirmed pelvic muscle spasm.

“It’s an area of the body neurologists don’t feel comfortable injecting, and I don’t necessarily feel comfortable doing it myself,” Dr. Karp said.

The researchers had to develop their own procedure because at the time they started the research there was almost nothing in the literature on how to inject botulinum toxin for pelvic pain in women. “People in different specialties have been doing it [to relieve pelvic pain] and it’s really widespread, but they’re doing it all different ways,” Dr. Karp said. “We’re hoping to find a best approach.”

Dr. Karp and her colleagues’ research is supported by the NINDS and the Eunice Kennedy Shriver National Institute of Child Health and Human Development. OnabotulinumtoxinA for the clinical trial is supplied by Allergan. Dr. Karp has received research support from Allergan and Merz.

SOURCE: Karp B et al. AAN 2018, Abstract P2.096; Karp B et al. AAN 2018, Abstract P2.098.

LOS ANGELES – Women treated surgically and with hormones for endometriosis may continue to experience pain, say investigators, and that pain frequently extends beyond the pelvis.

At the annual meeting of the American Academy of Neurology, Barbara Karp, MD, of the National Institute of Neurological Disorders and Stroke, presented results from an ongoing randomized trial of women with endometriosis receiving botulinum toxin to treat endometriosis-related chronic pelvic pain and pelvic spasm.

designer491/Thinkstock

All subjects had myofascial dysfunction. Most reported headaches and half reported orofacial pain, while 13 subjects reported myofascial trigger points in all the 26 spots assessed, which included head and facial muscles, shoulder and back muscles, and muscles in the buttocks, abdomen, and upper legs.

Dr. Karp said her group hypothesized that for patients with endometriosis, the widespread pain seen in the study “probably has some origin in sensitization initiated by pain associated with the endometriosis lesions, and that gives us a mechanism to think about peripheral and central sensitization.” But she noted that such sensitization can be easily missed in the clinic.

“One of the things that’s really underappreciated is how much women with chronic pelvic pain have pain elsewhere. So the neurologist or pain specialist may say, ‘that’s not my body territory, there’s something going on with your pelvis.’ And the gynecologist may be focused on the endometriosis and the endometriosis lesions. So you have these women with really widespread pain problems whose care is being fractionated.”

In another aspect of the study she also presented at the meeting, Dr. Karp, a neurologist who has studied the therapeutic use of neurotoxins such as botulinum for 30 years, showed results from an open-label extension of a randomized trial of botulinum toxin injections to treat pelvic spasm in the same cohort of women with confirmed endometriosis and confirmed pelvic muscle spasm.

“It’s an area of the body neurologists don’t feel comfortable injecting, and I don’t necessarily feel comfortable doing it myself,” Dr. Karp said.

The researchers had to develop their own procedure because at the time they started the research there was almost nothing in the literature on how to inject botulinum toxin for pelvic pain in women. “People in different specialties have been doing it [to relieve pelvic pain] and it’s really widespread, but they’re doing it all different ways,” Dr. Karp said. “We’re hoping to find a best approach.”

Dr. Karp and her colleagues’ research is supported by the NINDS and the Eunice Kennedy Shriver National Institute of Child Health and Human Development. OnabotulinumtoxinA for the clinical trial is supplied by Allergan. Dr. Karp has received research support from Allergan and Merz.

SOURCE: Karp B et al. AAN 2018, Abstract P2.096; Karp B et al. AAN 2018, Abstract P2.098.

LOS ANGELES – Women treated surgically and with hormones for endometriosis may continue to experience pain, say investigators, and that pain frequently extends beyond the pelvis.

At the annual meeting of the American Academy of Neurology, Barbara Karp, MD, of the National Institute of Neurological Disorders and Stroke, presented results from an ongoing randomized trial of women with endometriosis receiving botulinum toxin to treat endometriosis-related chronic pelvic pain and pelvic spasm.

designer491/Thinkstock

All subjects had myofascial dysfunction. Most reported headaches and half reported orofacial pain, while 13 subjects reported myofascial trigger points in all the 26 spots assessed, which included head and facial muscles, shoulder and back muscles, and muscles in the buttocks, abdomen, and upper legs.

Dr. Karp said her group hypothesized that for patients with endometriosis, the widespread pain seen in the study “probably has some origin in sensitization initiated by pain associated with the endometriosis lesions, and that gives us a mechanism to think about peripheral and central sensitization.” But she noted that such sensitization can be easily missed in the clinic.

“One of the things that’s really underappreciated is how much women with chronic pelvic pain have pain elsewhere. So the neurologist or pain specialist may say, ‘that’s not my body territory, there’s something going on with your pelvis.’ And the gynecologist may be focused on the endometriosis and the endometriosis lesions. So you have these women with really widespread pain problems whose care is being fractionated.”

In another aspect of the study she also presented at the meeting, Dr. Karp, a neurologist who has studied the therapeutic use of neurotoxins such as botulinum for 30 years, showed results from an open-label extension of a randomized trial of botulinum toxin injections to treat pelvic spasm in the same cohort of women with confirmed endometriosis and confirmed pelvic muscle spasm.

“It’s an area of the body neurologists don’t feel comfortable injecting, and I don’t necessarily feel comfortable doing it myself,” Dr. Karp said.

The researchers had to develop their own procedure because at the time they started the research there was almost nothing in the literature on how to inject botulinum toxin for pelvic pain in women. “People in different specialties have been doing it [to relieve pelvic pain] and it’s really widespread, but they’re doing it all different ways,” Dr. Karp said. “We’re hoping to find a best approach.”

Dr. Karp and her colleagues’ research is supported by the NINDS and the Eunice Kennedy Shriver National Institute of Child Health and Human Development. OnabotulinumtoxinA for the clinical trial is supplied by Allergan. Dr. Karp has received research support from Allergan and Merz.

SOURCE: Karp B et al. AAN 2018, Abstract P2.096; Karp B et al. AAN 2018, Abstract P2.098.

ORLANDO – The implementation of enhanced recovery after surgery (ERAS) pathways increased same-day discharge rates, but also was associated with a slight increase in readmissions within 30 days, according to a retrospective review of urogynecology cases at a single institution.

ERAS implementation also decreased total opioid use and pain scores, increased preemptive antiemetic use, and reduced rescue antiemetic needs in the postanesthesia care unit, Charelle M. Carter-Brooks, MD, reported at the annual scientific meeting of the Society of Gynecologic Surgeons.

[email protected]

SOURCES: Carter-Brooks C et al.; Fowler M et al. SGS 2018, Oral presentation 2; Oral posters 1 and 16.

ORLANDO – The implementation of enhanced recovery after surgery (ERAS) pathways increased same-day discharge rates, but also was associated with a slight increase in readmissions within 30 days, according to a retrospective review of urogynecology cases at a single institution.

ERAS implementation also decreased total opioid use and pain scores, increased preemptive antiemetic use, and reduced rescue antiemetic needs in the postanesthesia care unit, Charelle M. Carter-Brooks, MD, reported at the annual scientific meeting of the Society of Gynecologic Surgeons.

[email protected]

SOURCES: Carter-Brooks C et al.; Fowler M et al. SGS 2018, Oral presentation 2; Oral posters 1 and 16.

ORLANDO – The implementation of enhanced recovery after surgery (ERAS) pathways increased same-day discharge rates, but also was associated with a slight increase in readmissions within 30 days, according to a retrospective review of urogynecology cases at a single institution.

ERAS implementation also decreased total opioid use and pain scores, increased preemptive antiemetic use, and reduced rescue antiemetic needs in the postanesthesia care unit, Charelle M. Carter-Brooks, MD, reported at the annual scientific meeting of the Society of Gynecologic Surgeons.

[email protected]

SOURCES: Carter-Brooks C et al.; Fowler M et al. SGS 2018, Oral presentation 2; Oral posters 1 and 16.