The Journal of Family Practice

Lower, or comparable depression scores compared with other methods

A retrospective cohort trial compared 298 women on progesterone-only contraception with 6356 women on other or no contraception to examine the association between contraception use and depressive symptoms.¹

When surveyed with the Center of Epidemiological Studies Depression Scale (using both a 10-question, 30-point questionnaire and a 20-question, 60-point questionnaire), women on progesterone-only contraception demonstrated significantly lower levels of depressive symptoms compared with women using low-efficacy contraception (early withdrawal, spermicides, contraceptive films) or no contraception (mean deviation [MD]=-1.3; 95% confidence interval [CI], -2.4 to -0.2). No significant difference was seen in depression scores when compared with women on other forms of hormonal contraception (MD=-0.3; 95% CI, -1.2 to 0.6).

No significant difference in depression and less anhedonia for nonusers

A cross-sectional, population-based trial conducted by survey in Finland in 1997, 2002, and 2007 investigated the link between contraception and mood symptoms. It included 759 women using the progesterone-only levonorgestrel-releasing intrauterine system (LNG-IUS) and 7036 women on other forms of contraception or none.²

Current LNG-IUS users vs nonusers had no significant difference in diagnosis of depression, as assessed by asking patients if they had been diagnosed with or treated for depression in the previous year of contraception (8.0% vs 7.3%; P>.05); depressive symptoms in the previous year (24% vs 26%; P>.05), or psychological illness (1.9% vs 2.5%; P>.05).

LNG-IUS users reported significantly less anhedonia than nonusers in the previous year (19% vs 22%; P<.05). Moreover, in a partial correlation analysis, LNG-IUS was negatively correlated with anhedonia (r=0.024; P<.05) and symptoms of depression over the previous month (r=0.098; P<.05).

Did relationship satisfaction, rather than contraceptive, influence depression?

A multicenter prospective cohort trial analyzed the effect of the levonorgestrel implant on mood in 267 women followed for 2 years by evaluating depressive symptoms reported from the Mental Health Inventory, a 6-item questionnaire scored 0 to 24.³

The women demonstrated a significant increase in depressive symptom scores from 7.9 at baseline to 8.8 (P=.01). However, the study authors suggested that relationship satisfaction, not method of birth control, was the cause of depressive symptoms. The 62 women who experienced a decrease in relationship satisfaction exhibited a significant increase in depressive symptoms (6.7-10; P=.001) compared with the 156 women who reported an improvement or no change in relationship satisfaction (7.8-8.2; P=.30).

Lower, or comparable depression scores compared with other methods

A retrospective cohort trial compared 298 women on progesterone-only contraception with 6356 women on other or no contraception to examine the association between contraception use and depressive symptoms.¹

When surveyed with the Center of Epidemiological Studies Depression Scale (using both a 10-question, 30-point questionnaire and a 20-question, 60-point questionnaire), women on progesterone-only contraception demonstrated significantly lower levels of depressive symptoms compared with women using low-efficacy contraception (early withdrawal, spermicides, contraceptive films) or no contraception (mean deviation [MD]=-1.3; 95% confidence interval [CI], -2.4 to -0.2). No significant difference was seen in depression scores when compared with women on other forms of hormonal contraception (MD=-0.3; 95% CI, -1.2 to 0.6).

No significant difference in depression and less anhedonia for nonusers

A cross-sectional, population-based trial conducted by survey in Finland in 1997, 2002, and 2007 investigated the link between contraception and mood symptoms. It included 759 women using the progesterone-only levonorgestrel-releasing intrauterine system (LNG-IUS) and 7036 women on other forms of contraception or none.²

Current LNG-IUS users vs nonusers had no significant difference in diagnosis of depression, as assessed by asking patients if they had been diagnosed with or treated for depression in the previous year of contraception (8.0% vs 7.3%; P>.05); depressive symptoms in the previous year (24% vs 26%; P>.05), or psychological illness (1.9% vs 2.5%; P>.05).

LNG-IUS users reported significantly less anhedonia than nonusers in the previous year (19% vs 22%; P<.05). Moreover, in a partial correlation analysis, LNG-IUS was negatively correlated with anhedonia (r=0.024; P<.05) and symptoms of depression over the previous month (r=0.098; P<.05).

Did relationship satisfaction, rather than contraceptive, influence depression?

A multicenter prospective cohort trial analyzed the effect of the levonorgestrel implant on mood in 267 women followed for 2 years by evaluating depressive symptoms reported from the Mental Health Inventory, a 6-item questionnaire scored 0 to 24.³

The women demonstrated a significant increase in depressive symptom scores from 7.9 at baseline to 8.8 (P=.01). However, the study authors suggested that relationship satisfaction, not method of birth control, was the cause of depressive symptoms. The 62 women who experienced a decrease in relationship satisfaction exhibited a significant increase in depressive symptoms (6.7-10; P=.001) compared with the 156 women who reported an improvement or no change in relationship satisfaction (7.8-8.2; P=.30).

Lower, or comparable depression scores compared with other methods

A retrospective cohort trial compared 298 women on progesterone-only contraception with 6356 women on other or no contraception to examine the association between contraception use and depressive symptoms.¹

When surveyed with the Center of Epidemiological Studies Depression Scale (using both a 10-question, 30-point questionnaire and a 20-question, 60-point questionnaire), women on progesterone-only contraception demonstrated significantly lower levels of depressive symptoms compared with women using low-efficacy contraception (early withdrawal, spermicides, contraceptive films) or no contraception (mean deviation [MD]=-1.3; 95% confidence interval [CI], -2.4 to -0.2). No significant difference was seen in depression scores when compared with women on other forms of hormonal contraception (MD=-0.3; 95% CI, -1.2 to 0.6).

No significant difference in depression and less anhedonia for nonusers

A cross-sectional, population-based trial conducted by survey in Finland in 1997, 2002, and 2007 investigated the link between contraception and mood symptoms. It included 759 women using the progesterone-only levonorgestrel-releasing intrauterine system (LNG-IUS) and 7036 women on other forms of contraception or none.²

Current LNG-IUS users vs nonusers had no significant difference in diagnosis of depression, as assessed by asking patients if they had been diagnosed with or treated for depression in the previous year of contraception (8.0% vs 7.3%; P>.05); depressive symptoms in the previous year (24% vs 26%; P>.05), or psychological illness (1.9% vs 2.5%; P>.05).

LNG-IUS users reported significantly less anhedonia than nonusers in the previous year (19% vs 22%; P<.05). Moreover, in a partial correlation analysis, LNG-IUS was negatively correlated with anhedonia (r=0.024; P<.05) and symptoms of depression over the previous month (r=0.098; P<.05).

Did relationship satisfaction, rather than contraceptive, influence depression?

A multicenter prospective cohort trial analyzed the effect of the levonorgestrel implant on mood in 267 women followed for 2 years by evaluating depressive symptoms reported from the Mental Health Inventory, a 6-item questionnaire scored 0 to 24.³

The women demonstrated a significant increase in depressive symptom scores from 7.9 at baseline to 8.8 (P=.01). However, the study authors suggested that relationship satisfaction, not method of birth control, was the cause of depressive symptoms. The 62 women who experienced a decrease in relationship satisfaction exhibited a significant increase in depressive symptoms (6.7-10; P=.001) compared with the 156 women who reported an improvement or no change in relationship satisfaction (7.8-8.2; P=.30).

EVIDENCE SUMMARY

A 2013 Belgian prospective study of 104 non-IgA–deficient adults and children diagnosed with celiac disease and 537 adults and children without celiac disease evaluated the accuracy of 4 manufacturers’ serologic tests for IgA anti-tTG.¹ All patients underwent serologic testing followed by a diagnostic biopsy. A Marsh type 3 or greater lesion on duodenal biopsy was considered diagnostic for celiac disease.

Anti-tTG levels greater than 10 times the manufacturer-recommended level for a positive test (cut-off) were associated with a likelihood ratio of 111 to 294 (depending on the manufacturer) of positive biopsy. Post-test probabilities were calculated based on various pretest probabilities using an anti-tTG level of greater than 10 times the cut-off (TABLE¹).

Investigators also obtained IgG anti-DGP levels from 2 of the manufacturers.¹ Likelihood ratios increased along with antibody levels. Ratios of 80 and 400, depending on the manufacturer, were found at IgG anti-DGP levels 10-fold greater than the cut-off. Pre- and post-test probabilities weren’t calculated.

Positive predictive value rises with antibody levels

A 2013 retrospective study evaluated the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition’s recommendation to forego intestinal biopsy in non-IgA–deficient, symptomatic children and adolescents with positive IgA anti-tTG levels greater than 10 times the cut-off value, positive EMA, and positive HLA-DQ2 or HLA-DQ8.²

Overall, 153 symptomatic patients referred to the gastroenterology unit met these criteria. The age range was 9 months to 14.6 years (mean 4 years). All but 3 of the patients had Marsh 2 or greater lesions with biopsy-confirmed diagnoses of celiac disease. The remaining 3 developed biopsy-positive celiac disease on follow-up. The positive predictive value of combined serologic testing in this small selected patient population was 100%.

A 2013 retrospective study of 2477 symptomatic adults (older than 18 years) who received diagnostic testing for celiac disease at 2 academic institutions in Cleveland, Ohio, evaluated the predictive value of IgA anti-tTG and EMA. Of the patients, 610 (25%) had abnormal serologic tests, and 240 (39%) underwent endoscopy with biopsy.

A total of 50 patients (21%) had biopsy results consistent with celiac disease, defined as a Marsh 3 lesion or greater.³ An IgA anti-tTG level of 118 U/mL (5.9-fold the upper limit of normal on the test) had a positive predictive value of 86.4% with a false-positive value of 2%. An EMA titer greater than 1:160 when IgA anti-tTG was between 21 and 118 U/mL had a positive predictive value of 83%.

Antibody levels 10 times normal show 100% positive predictive value

A 2008 retrospective study of one manufacturer’s IgA anti-tTG serologic test sought to establish the serologic antibody level at which the positive predictive value was 100%.⁴ Overall, 148 people, 15 years and older, with a positive IgA anti-tTG before biopsy or within 21 days of biopsy were included.

Symptomatic patients with serologic levels of certain antibodies greater than 10 times the upper limits of normal may not need an intestinal biopsy to confirm the diagnosis of celiac disease.Of the patients biopsied, 139 (93%) had positive biopsies of Marsh 2 or greater and were diagnosed with celiac disease. Using a cut-off of 3.3 and 6.7 times the upper limit of normal, investigators calculated a positive predictive value of 95% and 98%, respectively.

A cut-off of 10 times the upper limit of normal or greater had a positive predictive value of 100%. The highest level of IgA anti-tTG in a patient who didn’t have celiac disease on biopsy was 7.3 times the upper limit of normal.

EVIDENCE SUMMARY

A 2013 Belgian prospective study of 104 non-IgA–deficient adults and children diagnosed with celiac disease and 537 adults and children without celiac disease evaluated the accuracy of 4 manufacturers’ serologic tests for IgA anti-tTG.¹ All patients underwent serologic testing followed by a diagnostic biopsy. A Marsh type 3 or greater lesion on duodenal biopsy was considered diagnostic for celiac disease.

Anti-tTG levels greater than 10 times the manufacturer-recommended level for a positive test (cut-off) were associated with a likelihood ratio of 111 to 294 (depending on the manufacturer) of positive biopsy. Post-test probabilities were calculated based on various pretest probabilities using an anti-tTG level of greater than 10 times the cut-off (TABLE¹).

Investigators also obtained IgG anti-DGP levels from 2 of the manufacturers.¹ Likelihood ratios increased along with antibody levels. Ratios of 80 and 400, depending on the manufacturer, were found at IgG anti-DGP levels 10-fold greater than the cut-off. Pre- and post-test probabilities weren’t calculated.

Positive predictive value rises with antibody levels

A 2013 retrospective study evaluated the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition’s recommendation to forego intestinal biopsy in non-IgA–deficient, symptomatic children and adolescents with positive IgA anti-tTG levels greater than 10 times the cut-off value, positive EMA, and positive HLA-DQ2 or HLA-DQ8.²

Overall, 153 symptomatic patients referred to the gastroenterology unit met these criteria. The age range was 9 months to 14.6 years (mean 4 years). All but 3 of the patients had Marsh 2 or greater lesions with biopsy-confirmed diagnoses of celiac disease. The remaining 3 developed biopsy-positive celiac disease on follow-up. The positive predictive value of combined serologic testing in this small selected patient population was 100%.

A 2013 retrospective study of 2477 symptomatic adults (older than 18 years) who received diagnostic testing for celiac disease at 2 academic institutions in Cleveland, Ohio, evaluated the predictive value of IgA anti-tTG and EMA. Of the patients, 610 (25%) had abnormal serologic tests, and 240 (39%) underwent endoscopy with biopsy.

A total of 50 patients (21%) had biopsy results consistent with celiac disease, defined as a Marsh 3 lesion or greater.³ An IgA anti-tTG level of 118 U/mL (5.9-fold the upper limit of normal on the test) had a positive predictive value of 86.4% with a false-positive value of 2%. An EMA titer greater than 1:160 when IgA anti-tTG was between 21 and 118 U/mL had a positive predictive value of 83%.

Antibody levels 10 times normal show 100% positive predictive value

A 2008 retrospective study of one manufacturer’s IgA anti-tTG serologic test sought to establish the serologic antibody level at which the positive predictive value was 100%.⁴ Overall, 148 people, 15 years and older, with a positive IgA anti-tTG before biopsy or within 21 days of biopsy were included.

Symptomatic patients with serologic levels of certain antibodies greater than 10 times the upper limits of normal may not need an intestinal biopsy to confirm the diagnosis of celiac disease.Of the patients biopsied, 139 (93%) had positive biopsies of Marsh 2 or greater and were diagnosed with celiac disease. Using a cut-off of 3.3 and 6.7 times the upper limit of normal, investigators calculated a positive predictive value of 95% and 98%, respectively.

A cut-off of 10 times the upper limit of normal or greater had a positive predictive value of 100%. The highest level of IgA anti-tTG in a patient who didn’t have celiac disease on biopsy was 7.3 times the upper limit of normal.

EVIDENCE SUMMARY

A 2013 Belgian prospective study of 104 non-IgA–deficient adults and children diagnosed with celiac disease and 537 adults and children without celiac disease evaluated the accuracy of 4 manufacturers’ serologic tests for IgA anti-tTG.¹ All patients underwent serologic testing followed by a diagnostic biopsy. A Marsh type 3 or greater lesion on duodenal biopsy was considered diagnostic for celiac disease.

Anti-tTG levels greater than 10 times the manufacturer-recommended level for a positive test (cut-off) were associated with a likelihood ratio of 111 to 294 (depending on the manufacturer) of positive biopsy. Post-test probabilities were calculated based on various pretest probabilities using an anti-tTG level of greater than 10 times the cut-off (TABLE¹).

Investigators also obtained IgG anti-DGP levels from 2 of the manufacturers.¹ Likelihood ratios increased along with antibody levels. Ratios of 80 and 400, depending on the manufacturer, were found at IgG anti-DGP levels 10-fold greater than the cut-off. Pre- and post-test probabilities weren’t calculated.

Positive predictive value rises with antibody levels

A 2013 retrospective study evaluated the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition’s recommendation to forego intestinal biopsy in non-IgA–deficient, symptomatic children and adolescents with positive IgA anti-tTG levels greater than 10 times the cut-off value, positive EMA, and positive HLA-DQ2 or HLA-DQ8.²

Overall, 153 symptomatic patients referred to the gastroenterology unit met these criteria. The age range was 9 months to 14.6 years (mean 4 years). All but 3 of the patients had Marsh 2 or greater lesions with biopsy-confirmed diagnoses of celiac disease. The remaining 3 developed biopsy-positive celiac disease on follow-up. The positive predictive value of combined serologic testing in this small selected patient population was 100%.

A 2013 retrospective study of 2477 symptomatic adults (older than 18 years) who received diagnostic testing for celiac disease at 2 academic institutions in Cleveland, Ohio, evaluated the predictive value of IgA anti-tTG and EMA. Of the patients, 610 (25%) had abnormal serologic tests, and 240 (39%) underwent endoscopy with biopsy.

A total of 50 patients (21%) had biopsy results consistent with celiac disease, defined as a Marsh 3 lesion or greater.³ An IgA anti-tTG level of 118 U/mL (5.9-fold the upper limit of normal on the test) had a positive predictive value of 86.4% with a false-positive value of 2%. An EMA titer greater than 1:160 when IgA anti-tTG was between 21 and 118 U/mL had a positive predictive value of 83%.

Antibody levels 10 times normal show 100% positive predictive value

A 2008 retrospective study of one manufacturer’s IgA anti-tTG serologic test sought to establish the serologic antibody level at which the positive predictive value was 100%.⁴ Overall, 148 people, 15 years and older, with a positive IgA anti-tTG before biopsy or within 21 days of biopsy were included.

Symptomatic patients with serologic levels of certain antibodies greater than 10 times the upper limits of normal may not need an intestinal biopsy to confirm the diagnosis of celiac disease.Of the patients biopsied, 139 (93%) had positive biopsies of Marsh 2 or greater and were diagnosed with celiac disease. Using a cut-off of 3.3 and 6.7 times the upper limit of normal, investigators calculated a positive predictive value of 95% and 98%, respectively.

A cut-off of 10 times the upper limit of normal or greater had a positive predictive value of 100%. The highest level of IgA anti-tTG in a patient who didn’t have celiac disease on biopsy was 7.3 times the upper limit of normal.

EVIDENCE SUMMARY

A 2014 meta-analysis of 15 trials (quasi-random and RCT) with a total of 28,271 patients that compared the effect of vitamin D on fracture risk with placebo or no treatment, found no benefit for vitamin D supplementation (TABLE).¹ Patients lived in community and nursing home settings and ranged in age from 50 to 85 years; 24% to 100% were female.

Only 3 trials required patients to have had a previous fracture. Exclusions included: diseases affecting bone metabolism, cognitive impairment, drugs affecting bone metabolism (bisphosphonates, selective estrogen receptor modulators, and corticosteroids), renal failure, hypercalcemia, nephrolithiasis, and decreased mobility (recent stroke recovery and Parkinson’s disease).

Formulations of vitamin D included cholecalciferol (D₃) 400 to 2000 IU/d for 4 months to 5 years or 100,000 to 500,000 IU every 3 to 12 months for 1 to 5 years; calcifediol (25(OH)D₃) 600 IU/d for 4 years; and ergocalciferol (D₂) 400 IU/d for 2 years or 3000 to 300,000 IU every 3 to 12 months for 10 months to 3 years.

Vitamin D analogs generally have no benefit either

The same meta-analysis compared vitamin D analogs to placebo or no treatment (8 trials, quasi-random and RCT, 1743 patients) on the risk of fracture, again finding no benefit in all but one case. Included patients were mostly by referral to tertiary or university hospitals and outpatient community settings.

Most of the studies included only a small number of patients (about 200), with the largest study having 740 patients. The age range was 50 to 77 years, and 50% to 100% were female. Most of the trials required patients to have osteoporosis or vitamin D deficiency with a previous vertebral deformity on imaging. Study exclusions included osteomalacia, malabsorption, hyperparathyroidism, active kidney stones, history of hypercalciuria, cancer, incurable disease, dementia, severe chronic illness (renal or liver failure), recent stroke or fracture, and drugs that affect bone metabolism.

Vitamin D analogs were given as alfacalcidol (1-alphahydroxyvitamin D₃) 0.5 mcg twice daily or 1 mcg/d for 36 weeks to 2 years or calcitriol (1,25-dihydroxyvitamin D₃) 0.25 to 1 mcg once or twice daily for one to 3 years. Researchers found a significant reduction in vertebral (but not nonvertebral or hip) fractures with alfacalcidol, but the finding occurred in a single trial that was assessed by the authors of the meta-analysis as subject to bias.

Supplementation doesn’t affect mortality, but does have some side effects

Patients taking vitamin D or an analog with or without calcium showed no difference in risk of death compared with patients taking placebo (29 trials, 71,032 patients; relative risk [RR]=0.97; 95% confidence interval [CI], 0.93-1.01).

Patients taking vitamin D or an analog were more likely than controls to have mild hypercalcemia, with an average increase of 2.7 mmol/L (21 trials, 17,124 patients; RR=2.28; 95% CI, 1.57-3.31). Patients taking calcitriol had the highest risk (4 trials, 988 patients; RR=4.41; 95% CI, 2.14-9.09).

Gastrointestinal adverse effects (4% increase) and renal calculi or mild renal insufficiency (16% increase) were more common with vitamin D and analogs than placebo (GI adverse effects: 15 trials, 47,761 patients; RR=1.04; 95% CI, 1.00-1.08; renal calculi or mild renal insufficiency: 11 trials, 46,548 patients; RR=1.16; 95% CI, 1.02-1.33).

RECOMMENDATIONS

There are no guidelines recommending vitamin D supplementation without calcium to prevent fracture.

EVIDENCE SUMMARY

A 2014 meta-analysis of 15 trials (quasi-random and RCT) with a total of 28,271 patients that compared the effect of vitamin D on fracture risk with placebo or no treatment, found no benefit for vitamin D supplementation (TABLE).¹ Patients lived in community and nursing home settings and ranged in age from 50 to 85 years; 24% to 100% were female.

Only 3 trials required patients to have had a previous fracture. Exclusions included: diseases affecting bone metabolism, cognitive impairment, drugs affecting bone metabolism (bisphosphonates, selective estrogen receptor modulators, and corticosteroids), renal failure, hypercalcemia, nephrolithiasis, and decreased mobility (recent stroke recovery and Parkinson’s disease).

Formulations of vitamin D included cholecalciferol (D₃) 400 to 2000 IU/d for 4 months to 5 years or 100,000 to 500,000 IU every 3 to 12 months for 1 to 5 years; calcifediol (25(OH)D₃) 600 IU/d for 4 years; and ergocalciferol (D₂) 400 IU/d for 2 years or 3000 to 300,000 IU every 3 to 12 months for 10 months to 3 years.

Vitamin D analogs generally have no benefit either

The same meta-analysis compared vitamin D analogs to placebo or no treatment (8 trials, quasi-random and RCT, 1743 patients) on the risk of fracture, again finding no benefit in all but one case. Included patients were mostly by referral to tertiary or university hospitals and outpatient community settings.

Most of the studies included only a small number of patients (about 200), with the largest study having 740 patients. The age range was 50 to 77 years, and 50% to 100% were female. Most of the trials required patients to have osteoporosis or vitamin D deficiency with a previous vertebral deformity on imaging. Study exclusions included osteomalacia, malabsorption, hyperparathyroidism, active kidney stones, history of hypercalciuria, cancer, incurable disease, dementia, severe chronic illness (renal or liver failure), recent stroke or fracture, and drugs that affect bone metabolism.

Vitamin D analogs were given as alfacalcidol (1-alphahydroxyvitamin D₃) 0.5 mcg twice daily or 1 mcg/d for 36 weeks to 2 years or calcitriol (1,25-dihydroxyvitamin D₃) 0.25 to 1 mcg once or twice daily for one to 3 years. Researchers found a significant reduction in vertebral (but not nonvertebral or hip) fractures with alfacalcidol, but the finding occurred in a single trial that was assessed by the authors of the meta-analysis as subject to bias.

Supplementation doesn’t affect mortality, but does have some side effects

Patients taking vitamin D or an analog with or without calcium showed no difference in risk of death compared with patients taking placebo (29 trials, 71,032 patients; relative risk [RR]=0.97; 95% confidence interval [CI], 0.93-1.01).

Patients taking vitamin D or an analog were more likely than controls to have mild hypercalcemia, with an average increase of 2.7 mmol/L (21 trials, 17,124 patients; RR=2.28; 95% CI, 1.57-3.31). Patients taking calcitriol had the highest risk (4 trials, 988 patients; RR=4.41; 95% CI, 2.14-9.09).

Gastrointestinal adverse effects (4% increase) and renal calculi or mild renal insufficiency (16% increase) were more common with vitamin D and analogs than placebo (GI adverse effects: 15 trials, 47,761 patients; RR=1.04; 95% CI, 1.00-1.08; renal calculi or mild renal insufficiency: 11 trials, 46,548 patients; RR=1.16; 95% CI, 1.02-1.33).

RECOMMENDATIONS

There are no guidelines recommending vitamin D supplementation without calcium to prevent fracture.

EVIDENCE SUMMARY

A 2014 meta-analysis of 15 trials (quasi-random and RCT) with a total of 28,271 patients that compared the effect of vitamin D on fracture risk with placebo or no treatment, found no benefit for vitamin D supplementation (TABLE).¹ Patients lived in community and nursing home settings and ranged in age from 50 to 85 years; 24% to 100% were female.

Only 3 trials required patients to have had a previous fracture. Exclusions included: diseases affecting bone metabolism, cognitive impairment, drugs affecting bone metabolism (bisphosphonates, selective estrogen receptor modulators, and corticosteroids), renal failure, hypercalcemia, nephrolithiasis, and decreased mobility (recent stroke recovery and Parkinson’s disease).

Formulations of vitamin D included cholecalciferol (D₃) 400 to 2000 IU/d for 4 months to 5 years or 100,000 to 500,000 IU every 3 to 12 months for 1 to 5 years; calcifediol (25(OH)D₃) 600 IU/d for 4 years; and ergocalciferol (D₂) 400 IU/d for 2 years or 3000 to 300,000 IU every 3 to 12 months for 10 months to 3 years.

Vitamin D analogs generally have no benefit either

The same meta-analysis compared vitamin D analogs to placebo or no treatment (8 trials, quasi-random and RCT, 1743 patients) on the risk of fracture, again finding no benefit in all but one case. Included patients were mostly by referral to tertiary or university hospitals and outpatient community settings.

Most of the studies included only a small number of patients (about 200), with the largest study having 740 patients. The age range was 50 to 77 years, and 50% to 100% were female. Most of the trials required patients to have osteoporosis or vitamin D deficiency with a previous vertebral deformity on imaging. Study exclusions included osteomalacia, malabsorption, hyperparathyroidism, active kidney stones, history of hypercalciuria, cancer, incurable disease, dementia, severe chronic illness (renal or liver failure), recent stroke or fracture, and drugs that affect bone metabolism.

Vitamin D analogs were given as alfacalcidol (1-alphahydroxyvitamin D₃) 0.5 mcg twice daily or 1 mcg/d for 36 weeks to 2 years or calcitriol (1,25-dihydroxyvitamin D₃) 0.25 to 1 mcg once or twice daily for one to 3 years. Researchers found a significant reduction in vertebral (but not nonvertebral or hip) fractures with alfacalcidol, but the finding occurred in a single trial that was assessed by the authors of the meta-analysis as subject to bias.

Supplementation doesn’t affect mortality, but does have some side effects

Patients taking vitamin D or an analog with or without calcium showed no difference in risk of death compared with patients taking placebo (29 trials, 71,032 patients; relative risk [RR]=0.97; 95% confidence interval [CI], 0.93-1.01).

Patients taking vitamin D or an analog were more likely than controls to have mild hypercalcemia, with an average increase of 2.7 mmol/L (21 trials, 17,124 patients; RR=2.28; 95% CI, 1.57-3.31). Patients taking calcitriol had the highest risk (4 trials, 988 patients; RR=4.41; 95% CI, 2.14-9.09).

Gastrointestinal adverse effects (4% increase) and renal calculi or mild renal insufficiency (16% increase) were more common with vitamin D and analogs than placebo (GI adverse effects: 15 trials, 47,761 patients; RR=1.04; 95% CI, 1.00-1.08; renal calculi or mild renal insufficiency: 11 trials, 46,548 patients; RR=1.16; 95% CI, 1.02-1.33).

RECOMMENDATIONS

There are no guidelines recommending vitamin D supplementation without calcium to prevent fracture.

EVIDENCE SUMMARY

A systematic review and meta-analysis of prospective cohort studies evaluating infant risk factors for childhood obesity found that breastfeeding was associated with a lower risk of obesity.¹ The authors identified 10 trials (primarily from the United States and Europe) with more than 76,000 infants that compared the effect of some breastfeeding in the first year to no breastfeeding. Follow-up ranged from 2 to 14 years (median 6 years).

Having ever breastfed decreased the odds of future overweight (BMI >85th percentile) or obesity (BMI >95th percentile) by 15% (adjusted odds ratio [AOR]=0.85; 95% confidence interval [CI], 0.74-0.99).

Subsequent studies suggest increased risk with formula feeding

Three large, prospective, longitudinal cohort studies have been published since the meta-analysis. One, which followed 43,367 term infants in Japan, found that formula feeding before 6 months was associated with increased risk of obesity compared with continuous breastfeeding for 6 months.² Researchers evaluated weight at 7 years and adjusted for child and maternal factors associated with weight gain (AOR for obesity, formula-fed infants=1.8; 95% CI, 1.3-2.6).

A similar prospective longitudinal cohort study of 2868 infants in Australia analyzed maternal breastfeeding diaries and followed children’s weight to age 20 years.³ Introducing a milk other than breast milk before 6 months of age was linked to increased risk of obesity at age 20 (odds ratio [OR]=1.5; 95% CI, 1.1-1.9).

Finally, in a prospective cohort of 568 children in India, 17% of children who breastfed for fewer than 6 months were above the 90th percentile for weight at age 5 years, compared with 10% of children who were breastfed for at least 18 months.⁴ The result didn’t reach statistical significance, however (P=.08).

Interventions that increase breastfeeding don’t seem to have an impact

An RCT of an intervention to promote breastfeeding didn’t find any effect on subsequent obesity rates. Researchers in Belarus randomized 17,046 mother-infant pairs to breastfeeding promotion, modeled on the UNICEF Baby-Friendly Hospital Initiative, or usual care. The intervention increased the prevalence of exclusive breastfeeding (at 3 months, 43% vs 6%; at 6 months, 7% vs 0.6%; P values not given).

When researchers evaluated 13,879 children at 11 or 12 years by intention-to-treat analysis, however, they found no difference in mean BMI between the children whose mothers received the intervention and those whose mothers didn’t (BMI difference=0.16; 95% CI, -0.02 to 0.35).⁵

Introduction of solid foods: Later is better

A systematic review investigated the association between the timing of introducing complementary (solid) foods and childhood obesity in 23 primarily cross-sectional and cohort studies (17 from the United States, Canada, and Europe) with more than 33,000 patients. Follow-up ranged from 4 to 19 years.

Eight of the 21 studies that used BMI as an outcome found that early introduction of complementary foods was associated with a higher childhood BMI. In the largest study (a cohort of 17,561 infants), introducing complementary foods before 3 months was associated with higher risk of obesity at age 5 years than introducing them thereafter (OR=1.3; 95% CI, 1.1-1.6).⁶ Introduction of solids after 4 months was not associated with childhood obesity.

A systematic review of 10 primarily cross-sectional and cohort studies with more than 3000 infants evaluated associations between the types of complementary foods given and the development of childhood obesity.⁷ Six of the 10 studies were from Europe and none were from the United States. Follow-up ages ranged from 4 to 11 years.

Scheduled feeding was associated with rapid weight gain at a higher rate than feeding on demand.Outcomes were heterogeneous, and no meta-analysis could be performed. The authors cited 3 studies (total 1174 infants) that found various positive associations between total caloric intake during complementary feeding and childhood obesity. No consistent evidence pointed to increased risk from specific foods or food groups.

Scheduled feeding is linked to rapid infant weight gain

A cohort study evaluated the baseline data of an Australian RCT (on an intervention to promote proper nutrition) in 612 infants, mean age 4.3 months.⁸ Researchers looked at the relationship between feeding on demand vs scheduled feeding (assessed by parental report) and weight gain in infancy. “Rapid weight gain” was defined as >0.67 change in weight-for-age Z-score between birth and enrollment.

Scheduled feeding was associated with rapid weight gain at a higher rate than feeding on demand (OR=2.3; 95% CI, 1.1-4.6). This study didn’t use childhood obesity as an outcome.

EVIDENCE SUMMARY

A systematic review and meta-analysis of prospective cohort studies evaluating infant risk factors for childhood obesity found that breastfeeding was associated with a lower risk of obesity.¹ The authors identified 10 trials (primarily from the United States and Europe) with more than 76,000 infants that compared the effect of some breastfeeding in the first year to no breastfeeding. Follow-up ranged from 2 to 14 years (median 6 years).

Having ever breastfed decreased the odds of future overweight (BMI >85th percentile) or obesity (BMI >95th percentile) by 15% (adjusted odds ratio [AOR]=0.85; 95% confidence interval [CI], 0.74-0.99).

Subsequent studies suggest increased risk with formula feeding

Three large, prospective, longitudinal cohort studies have been published since the meta-analysis. One, which followed 43,367 term infants in Japan, found that formula feeding before 6 months was associated with increased risk of obesity compared with continuous breastfeeding for 6 months.² Researchers evaluated weight at 7 years and adjusted for child and maternal factors associated with weight gain (AOR for obesity, formula-fed infants=1.8; 95% CI, 1.3-2.6).

A similar prospective longitudinal cohort study of 2868 infants in Australia analyzed maternal breastfeeding diaries and followed children’s weight to age 20 years.³ Introducing a milk other than breast milk before 6 months of age was linked to increased risk of obesity at age 20 (odds ratio [OR]=1.5; 95% CI, 1.1-1.9).

Finally, in a prospective cohort of 568 children in India, 17% of children who breastfed for fewer than 6 months were above the 90th percentile for weight at age 5 years, compared with 10% of children who were breastfed for at least 18 months.⁴ The result didn’t reach statistical significance, however (P=.08).

Interventions that increase breastfeeding don’t seem to have an impact

An RCT of an intervention to promote breastfeeding didn’t find any effect on subsequent obesity rates. Researchers in Belarus randomized 17,046 mother-infant pairs to breastfeeding promotion, modeled on the UNICEF Baby-Friendly Hospital Initiative, or usual care. The intervention increased the prevalence of exclusive breastfeeding (at 3 months, 43% vs 6%; at 6 months, 7% vs 0.6%; P values not given).

When researchers evaluated 13,879 children at 11 or 12 years by intention-to-treat analysis, however, they found no difference in mean BMI between the children whose mothers received the intervention and those whose mothers didn’t (BMI difference=0.16; 95% CI, -0.02 to 0.35).⁵

Introduction of solid foods: Later is better

A systematic review investigated the association between the timing of introducing complementary (solid) foods and childhood obesity in 23 primarily cross-sectional and cohort studies (17 from the United States, Canada, and Europe) with more than 33,000 patients. Follow-up ranged from 4 to 19 years.

Eight of the 21 studies that used BMI as an outcome found that early introduction of complementary foods was associated with a higher childhood BMI. In the largest study (a cohort of 17,561 infants), introducing complementary foods before 3 months was associated with higher risk of obesity at age 5 years than introducing them thereafter (OR=1.3; 95% CI, 1.1-1.6).⁶ Introduction of solids after 4 months was not associated with childhood obesity.

A systematic review of 10 primarily cross-sectional and cohort studies with more than 3000 infants evaluated associations between the types of complementary foods given and the development of childhood obesity.⁷ Six of the 10 studies were from Europe and none were from the United States. Follow-up ages ranged from 4 to 11 years.

Scheduled feeding was associated with rapid weight gain at a higher rate than feeding on demand.Outcomes were heterogeneous, and no meta-analysis could be performed. The authors cited 3 studies (total 1174 infants) that found various positive associations between total caloric intake during complementary feeding and childhood obesity. No consistent evidence pointed to increased risk from specific foods or food groups.

Scheduled feeding is linked to rapid infant weight gain

A cohort study evaluated the baseline data of an Australian RCT (on an intervention to promote proper nutrition) in 612 infants, mean age 4.3 months.⁸ Researchers looked at the relationship between feeding on demand vs scheduled feeding (assessed by parental report) and weight gain in infancy. “Rapid weight gain” was defined as >0.67 change in weight-for-age Z-score between birth and enrollment.

Scheduled feeding was associated with rapid weight gain at a higher rate than feeding on demand (OR=2.3; 95% CI, 1.1-4.6). This study didn’t use childhood obesity as an outcome.

EVIDENCE SUMMARY

A systematic review and meta-analysis of prospective cohort studies evaluating infant risk factors for childhood obesity found that breastfeeding was associated with a lower risk of obesity.¹ The authors identified 10 trials (primarily from the United States and Europe) with more than 76,000 infants that compared the effect of some breastfeeding in the first year to no breastfeeding. Follow-up ranged from 2 to 14 years (median 6 years).

Having ever breastfed decreased the odds of future overweight (BMI >85th percentile) or obesity (BMI >95th percentile) by 15% (adjusted odds ratio [AOR]=0.85; 95% confidence interval [CI], 0.74-0.99).

Subsequent studies suggest increased risk with formula feeding

Three large, prospective, longitudinal cohort studies have been published since the meta-analysis. One, which followed 43,367 term infants in Japan, found that formula feeding before 6 months was associated with increased risk of obesity compared with continuous breastfeeding for 6 months.² Researchers evaluated weight at 7 years and adjusted for child and maternal factors associated with weight gain (AOR for obesity, formula-fed infants=1.8; 95% CI, 1.3-2.6).

A similar prospective longitudinal cohort study of 2868 infants in Australia analyzed maternal breastfeeding diaries and followed children’s weight to age 20 years.³ Introducing a milk other than breast milk before 6 months of age was linked to increased risk of obesity at age 20 (odds ratio [OR]=1.5; 95% CI, 1.1-1.9).

Finally, in a prospective cohort of 568 children in India, 17% of children who breastfed for fewer than 6 months were above the 90th percentile for weight at age 5 years, compared with 10% of children who were breastfed for at least 18 months.⁴ The result didn’t reach statistical significance, however (P=.08).

Interventions that increase breastfeeding don’t seem to have an impact

An RCT of an intervention to promote breastfeeding didn’t find any effect on subsequent obesity rates. Researchers in Belarus randomized 17,046 mother-infant pairs to breastfeeding promotion, modeled on the UNICEF Baby-Friendly Hospital Initiative, or usual care. The intervention increased the prevalence of exclusive breastfeeding (at 3 months, 43% vs 6%; at 6 months, 7% vs 0.6%; P values not given).

When researchers evaluated 13,879 children at 11 or 12 years by intention-to-treat analysis, however, they found no difference in mean BMI between the children whose mothers received the intervention and those whose mothers didn’t (BMI difference=0.16; 95% CI, -0.02 to 0.35).⁵

Introduction of solid foods: Later is better

A systematic review investigated the association between the timing of introducing complementary (solid) foods and childhood obesity in 23 primarily cross-sectional and cohort studies (17 from the United States, Canada, and Europe) with more than 33,000 patients. Follow-up ranged from 4 to 19 years.

Eight of the 21 studies that used BMI as an outcome found that early introduction of complementary foods was associated with a higher childhood BMI. In the largest study (a cohort of 17,561 infants), introducing complementary foods before 3 months was associated with higher risk of obesity at age 5 years than introducing them thereafter (OR=1.3; 95% CI, 1.1-1.6).⁶ Introduction of solids after 4 months was not associated with childhood obesity.

A systematic review of 10 primarily cross-sectional and cohort studies with more than 3000 infants evaluated associations between the types of complementary foods given and the development of childhood obesity.⁷ Six of the 10 studies were from Europe and none were from the United States. Follow-up ages ranged from 4 to 11 years.

Scheduled feeding was associated with rapid weight gain at a higher rate than feeding on demand.Outcomes were heterogeneous, and no meta-analysis could be performed. The authors cited 3 studies (total 1174 infants) that found various positive associations between total caloric intake during complementary feeding and childhood obesity. No consistent evidence pointed to increased risk from specific foods or food groups.

Scheduled feeding is linked to rapid infant weight gain

A cohort study evaluated the baseline data of an Australian RCT (on an intervention to promote proper nutrition) in 612 infants, mean age 4.3 months.⁸ Researchers looked at the relationship between feeding on demand vs scheduled feeding (assessed by parental report) and weight gain in infancy. “Rapid weight gain” was defined as >0.67 change in weight-for-age Z-score between birth and enrollment.

Scheduled feeding was associated with rapid weight gain at a higher rate than feeding on demand (OR=2.3; 95% CI, 1.1-4.6). This study didn’t use childhood obesity as an outcome.

THE CASE

A 59-year-old woman from the Democratic Republic of the Congo presented to our family medicine clinic with acute worsening of longstanding headaches. Using a Swahili interpreter, the patient reported a 15-year history of recurrent, intermittent headaches that had been previously diagnosed as migraines. Over the prior 2 months, the headaches had intensified with new symptoms of dizziness, ocular pain, and blurred vision with red flashes. She had no hemiplegia, dysarthria, respiratory symptoms, night sweats, or weight loss. A neurologic exam was negative.

Before immigrating to the United States 14 years earlier, the patient lived for 6 months in a refugee camp in the Congo. At the time of her immigration, she was negative for human immunodeficiency virus (HIV), and a tuberculosis (TB) skin test was positive. A chest x-ray was normal and she had no respiratory symptoms. Shortly after her immigration, she completed 6 months of isoniazid treatment for latent TB.

THE DIAGNOSIS

A computed tomography (CT) scan of the patient’s head demonstrated a large right frontal mass. The differential diagnosis included neoplasm, sarcoidosis, or, less likely, an infectious etiology. A contrast-enhanced magnetic resonance image (MRI) of the brain showed multiple heterogeneous enhancing lesions, with the largest measuring 4.4 cm x 4.6 cm x 3 cm (FIGURE 1). Significant surrounding edema caused a 1.6-cm midline shift, subfalcine herniation, and impending uncal herniation. A CT of the abdomen and chest showed no pulmonary masses or metastatic disease, but did reveal a single 1-cm lymph node in the mediastinum and a 1.2-cm right axillary node.

A craniotomy was performed, which confirmed a large mass adhered to the dura. Surgeons removed the mass en bloc; pathology was consistent with a necrotizing granuloma. Acid-fast bacilli (AFB) staining of 3 specimens was negative. Because the tissue was preserved in formalin, mycobacterial cultures could not be obtained. A cerebrospinal fluid analysis showed lymphocytosis and elevated protein, consistent with neurotuberculosis. Blood testing for Mycobacterium tuberculosis with interferon gamma release assay (IGRA) was negative, as was testing for HIV 1 and 2. In addition, induced sputum was AFB-smear negative, as was an M tuberculosis polymerase chain reaction test.

Despite the negative AFB stain and negative IGRA, the patient’s findings were suspicious for TB, so we began to treat her empirically for neurotuberculosis with a 4-drug regimen (isoniazid, rifampin, pyrazinamide, and ethambutol).

In an attempt to confirm the diagnosis of TB and determine sensitivities, we performed a right axillary lymph node biopsy and sent it to the Centers for Disease Control and Prevention (CDC), along with the preserved neural tissue. Using a newly developed technique, the CDC amplified and sequenced mycobacterial DNA from both the central nervous system (CNS) mass and the axillary node, confirming M tuberculosis complex species. Cultures from the axillary node grew pan-sensitive M tuberculosis.

DISCUSSION

The imaging studies of central nervous system TB are often indistinguishable from those of patients with metastatic disease.About one-third of the world’s population has either active or latent TB.¹ In areas where TB is endemic, tuberculomas have accounted for up to 20% of intracranial masses.² In non-endemic regions, however, they are relatively uncommon. The 3 manifestations of active CNS TB are meningitis, tuberculoma, and abscess.³ The clinical presentation and imaging studies of CNS TB are often indistinguishable from those of patients with malignant neoplasms or metastatic disease. Biopsies may be necessary to distinguish tuberculomas from other intracranial lesions such as pyogenic abscesses or necrotic tumors.⁴ Mycobacterial cultures were not done on the brain biopsies of our patient because of the high clinical suspicion for neoplasm. Axillary lymph node tissue ultimately confirmed the diagnosis and provided sensitivities.

A diagnosis of CNS tuberculoma without meningitis can be challenging because the clinical presentation is often vague, mild, or even asymptomatic. Constitutional symptoms may include headache, fever, and anorexia.⁵

In our patient, IGRA testing was also negative. For latent TB, IGRAs are considered to be at least as sensitive as, and considerably more specific than TB skin testing, but their use in CNS TB is less well understood. Studies evaluating IGRA sensitivity for TB meningitis show variable results. In one study, IGRAs were positive in only 50% of culture-confirmed cases of TB meningitis in an HIV-negative population.⁶

Obtain sputum samples for all patients with extrapulmonary TB

The CDC recommends sputum sampling for all patients with extrapulmonary TB, even in the absence of pulmonary symptoms or radiographic findings, to determine the level of infectivity and potential need for a contact investigation.⁷

Due to low sensitivity of currently available rapid diagnostic tests and high mortality associated with delayed treatment, initiation of empiric treatment is recommended when the probability of CNS TB is high.⁵

Initiation of empiric treatment is advisable when the probability of CNS TB is high.

Treatment duration for CNS tuberculomas is based on one randomized controlled trial,⁸ a small number of observational studies, a prospective cohort study looking at radiographic resolution,⁹ and expert opinion. Treatment recommendations often do not distinguish CNS tuberculomas from TB meningitis.¹⁰ CNS tuberculomas are commonly treated with a minimum of 12 months of therapy, generally using the same medications and dosages used in the treatment of pulmonary TB, starting with 4 first-line agents: isoniazid, rifampin, pyrazinamide, and ethambutol. Modification of the treatment regimen may be made once sensitivities are available.¹⁰

Our patient. After cultures were determined to be pan-sensitive, our patient’s treatment regimen was simplified to rifampin and isoniazid, which she continued for the remainder of her treatment course. Her treatment was discontinued after 18 months when quarterly MRIs showed stabilization of the tuberculomas (FIGURE 2).

Following her surgery, she was started on levetiractam for seizure prophylaxis. She subsequently had a seizure on 2 occasions when the medication was discontinued or decreased, so we chose to continue it. The patient is asymptomatic from her disease with no residual deficits.

THE TAKEAWAY

A change in headache patterns in a patient over the age of 50 is a red flag that warrants imaging. In patients from countries where TB is endemic,¹¹ consider neurotuberculosis in the differential diagnosis of worsening headaches and progressive neurologic symptoms.

A diagnosis of CNS TB can be difficult and requires a high level of clinical suspicion, but early diagnosis and treatment of neurotuberculosis can minimize the high risk of morbidity and mortality. Treatment for TB shouldn’t be withheld in cases in which there’s a strong clinical suspicion for TB, but for which a definitive diagnosis is still pending.

THE CASE

A 59-year-old woman from the Democratic Republic of the Congo presented to our family medicine clinic with acute worsening of longstanding headaches. Using a Swahili interpreter, the patient reported a 15-year history of recurrent, intermittent headaches that had been previously diagnosed as migraines. Over the prior 2 months, the headaches had intensified with new symptoms of dizziness, ocular pain, and blurred vision with red flashes. She had no hemiplegia, dysarthria, respiratory symptoms, night sweats, or weight loss. A neurologic exam was negative.

Before immigrating to the United States 14 years earlier, the patient lived for 6 months in a refugee camp in the Congo. At the time of her immigration, she was negative for human immunodeficiency virus (HIV), and a tuberculosis (TB) skin test was positive. A chest x-ray was normal and she had no respiratory symptoms. Shortly after her immigration, she completed 6 months of isoniazid treatment for latent TB.

THE DIAGNOSIS

A computed tomography (CT) scan of the patient’s head demonstrated a large right frontal mass. The differential diagnosis included neoplasm, sarcoidosis, or, less likely, an infectious etiology. A contrast-enhanced magnetic resonance image (MRI) of the brain showed multiple heterogeneous enhancing lesions, with the largest measuring 4.4 cm x 4.6 cm x 3 cm (FIGURE 1). Significant surrounding edema caused a 1.6-cm midline shift, subfalcine herniation, and impending uncal herniation. A CT of the abdomen and chest showed no pulmonary masses or metastatic disease, but did reveal a single 1-cm lymph node in the mediastinum and a 1.2-cm right axillary node.

A craniotomy was performed, which confirmed a large mass adhered to the dura. Surgeons removed the mass en bloc; pathology was consistent with a necrotizing granuloma. Acid-fast bacilli (AFB) staining of 3 specimens was negative. Because the tissue was preserved in formalin, mycobacterial cultures could not be obtained. A cerebrospinal fluid analysis showed lymphocytosis and elevated protein, consistent with neurotuberculosis. Blood testing for Mycobacterium tuberculosis with interferon gamma release assay (IGRA) was negative, as was testing for HIV 1 and 2. In addition, induced sputum was AFB-smear negative, as was an M tuberculosis polymerase chain reaction test.

Despite the negative AFB stain and negative IGRA, the patient’s findings were suspicious for TB, so we began to treat her empirically for neurotuberculosis with a 4-drug regimen (isoniazid, rifampin, pyrazinamide, and ethambutol).

In an attempt to confirm the diagnosis of TB and determine sensitivities, we performed a right axillary lymph node biopsy and sent it to the Centers for Disease Control and Prevention (CDC), along with the preserved neural tissue. Using a newly developed technique, the CDC amplified and sequenced mycobacterial DNA from both the central nervous system (CNS) mass and the axillary node, confirming M tuberculosis complex species. Cultures from the axillary node grew pan-sensitive M tuberculosis.

DISCUSSION

The imaging studies of central nervous system TB are often indistinguishable from those of patients with metastatic disease.About one-third of the world’s population has either active or latent TB.¹ In areas where TB is endemic, tuberculomas have accounted for up to 20% of intracranial masses.² In non-endemic regions, however, they are relatively uncommon. The 3 manifestations of active CNS TB are meningitis, tuberculoma, and abscess.³ The clinical presentation and imaging studies of CNS TB are often indistinguishable from those of patients with malignant neoplasms or metastatic disease. Biopsies may be necessary to distinguish tuberculomas from other intracranial lesions such as pyogenic abscesses or necrotic tumors.⁴ Mycobacterial cultures were not done on the brain biopsies of our patient because of the high clinical suspicion for neoplasm. Axillary lymph node tissue ultimately confirmed the diagnosis and provided sensitivities.

A diagnosis of CNS tuberculoma without meningitis can be challenging because the clinical presentation is often vague, mild, or even asymptomatic. Constitutional symptoms may include headache, fever, and anorexia.⁵

In our patient, IGRA testing was also negative. For latent TB, IGRAs are considered to be at least as sensitive as, and considerably more specific than TB skin testing, but their use in CNS TB is less well understood. Studies evaluating IGRA sensitivity for TB meningitis show variable results. In one study, IGRAs were positive in only 50% of culture-confirmed cases of TB meningitis in an HIV-negative population.⁶

Obtain sputum samples for all patients with extrapulmonary TB

The CDC recommends sputum sampling for all patients with extrapulmonary TB, even in the absence of pulmonary symptoms or radiographic findings, to determine the level of infectivity and potential need for a contact investigation.⁷

Due to low sensitivity of currently available rapid diagnostic tests and high mortality associated with delayed treatment, initiation of empiric treatment is recommended when the probability of CNS TB is high.⁵

Initiation of empiric treatment is advisable when the probability of CNS TB is high.

Treatment duration for CNS tuberculomas is based on one randomized controlled trial,⁸ a small number of observational studies, a prospective cohort study looking at radiographic resolution,⁹ and expert opinion. Treatment recommendations often do not distinguish CNS tuberculomas from TB meningitis.¹⁰ CNS tuberculomas are commonly treated with a minimum of 12 months of therapy, generally using the same medications and dosages used in the treatment of pulmonary TB, starting with 4 first-line agents: isoniazid, rifampin, pyrazinamide, and ethambutol. Modification of the treatment regimen may be made once sensitivities are available.¹⁰

Our patient. After cultures were determined to be pan-sensitive, our patient’s treatment regimen was simplified to rifampin and isoniazid, which she continued for the remainder of her treatment course. Her treatment was discontinued after 18 months when quarterly MRIs showed stabilization of the tuberculomas (FIGURE 2).

Following her surgery, she was started on levetiractam for seizure prophylaxis. She subsequently had a seizure on 2 occasions when the medication was discontinued or decreased, so we chose to continue it. The patient is asymptomatic from her disease with no residual deficits.

THE TAKEAWAY

A change in headache patterns in a patient over the age of 50 is a red flag that warrants imaging. In patients from countries where TB is endemic,¹¹ consider neurotuberculosis in the differential diagnosis of worsening headaches and progressive neurologic symptoms.

A diagnosis of CNS TB can be difficult and requires a high level of clinical suspicion, but early diagnosis and treatment of neurotuberculosis can minimize the high risk of morbidity and mortality. Treatment for TB shouldn’t be withheld in cases in which there’s a strong clinical suspicion for TB, but for which a definitive diagnosis is still pending.

THE CASE

A 59-year-old woman from the Democratic Republic of the Congo presented to our family medicine clinic with acute worsening of longstanding headaches. Using a Swahili interpreter, the patient reported a 15-year history of recurrent, intermittent headaches that had been previously diagnosed as migraines. Over the prior 2 months, the headaches had intensified with new symptoms of dizziness, ocular pain, and blurred vision with red flashes. She had no hemiplegia, dysarthria, respiratory symptoms, night sweats, or weight loss. A neurologic exam was negative.

Before immigrating to the United States 14 years earlier, the patient lived for 6 months in a refugee camp in the Congo. At the time of her immigration, she was negative for human immunodeficiency virus (HIV), and a tuberculosis (TB) skin test was positive. A chest x-ray was normal and she had no respiratory symptoms. Shortly after her immigration, she completed 6 months of isoniazid treatment for latent TB.

THE DIAGNOSIS

A computed tomography (CT) scan of the patient’s head demonstrated a large right frontal mass. The differential diagnosis included neoplasm, sarcoidosis, or, less likely, an infectious etiology. A contrast-enhanced magnetic resonance image (MRI) of the brain showed multiple heterogeneous enhancing lesions, with the largest measuring 4.4 cm x 4.6 cm x 3 cm (FIGURE 1). Significant surrounding edema caused a 1.6-cm midline shift, subfalcine herniation, and impending uncal herniation. A CT of the abdomen and chest showed no pulmonary masses or metastatic disease, but did reveal a single 1-cm lymph node in the mediastinum and a 1.2-cm right axillary node.

A craniotomy was performed, which confirmed a large mass adhered to the dura. Surgeons removed the mass en bloc; pathology was consistent with a necrotizing granuloma. Acid-fast bacilli (AFB) staining of 3 specimens was negative. Because the tissue was preserved in formalin, mycobacterial cultures could not be obtained. A cerebrospinal fluid analysis showed lymphocytosis and elevated protein, consistent with neurotuberculosis. Blood testing for Mycobacterium tuberculosis with interferon gamma release assay (IGRA) was negative, as was testing for HIV 1 and 2. In addition, induced sputum was AFB-smear negative, as was an M tuberculosis polymerase chain reaction test.

Despite the negative AFB stain and negative IGRA, the patient’s findings were suspicious for TB, so we began to treat her empirically for neurotuberculosis with a 4-drug regimen (isoniazid, rifampin, pyrazinamide, and ethambutol).

In an attempt to confirm the diagnosis of TB and determine sensitivities, we performed a right axillary lymph node biopsy and sent it to the Centers for Disease Control and Prevention (CDC), along with the preserved neural tissue. Using a newly developed technique, the CDC amplified and sequenced mycobacterial DNA from both the central nervous system (CNS) mass and the axillary node, confirming M tuberculosis complex species. Cultures from the axillary node grew pan-sensitive M tuberculosis.

DISCUSSION

The imaging studies of central nervous system TB are often indistinguishable from those of patients with metastatic disease.About one-third of the world’s population has either active or latent TB.¹ In areas where TB is endemic, tuberculomas have accounted for up to 20% of intracranial masses.² In non-endemic regions, however, they are relatively uncommon. The 3 manifestations of active CNS TB are meningitis, tuberculoma, and abscess.³ The clinical presentation and imaging studies of CNS TB are often indistinguishable from those of patients with malignant neoplasms or metastatic disease. Biopsies may be necessary to distinguish tuberculomas from other intracranial lesions such as pyogenic abscesses or necrotic tumors.⁴ Mycobacterial cultures were not done on the brain biopsies of our patient because of the high clinical suspicion for neoplasm. Axillary lymph node tissue ultimately confirmed the diagnosis and provided sensitivities.

A diagnosis of CNS tuberculoma without meningitis can be challenging because the clinical presentation is often vague, mild, or even asymptomatic. Constitutional symptoms may include headache, fever, and anorexia.⁵

In our patient, IGRA testing was also negative. For latent TB, IGRAs are considered to be at least as sensitive as, and considerably more specific than TB skin testing, but their use in CNS TB is less well understood. Studies evaluating IGRA sensitivity for TB meningitis show variable results. In one study, IGRAs were positive in only 50% of culture-confirmed cases of TB meningitis in an HIV-negative population.⁶

Obtain sputum samples for all patients with extrapulmonary TB

The CDC recommends sputum sampling for all patients with extrapulmonary TB, even in the absence of pulmonary symptoms or radiographic findings, to determine the level of infectivity and potential need for a contact investigation.⁷

Due to low sensitivity of currently available rapid diagnostic tests and high mortality associated with delayed treatment, initiation of empiric treatment is recommended when the probability of CNS TB is high.⁵

Initiation of empiric treatment is advisable when the probability of CNS TB is high.

Treatment duration for CNS tuberculomas is based on one randomized controlled trial,⁸ a small number of observational studies, a prospective cohort study looking at radiographic resolution,⁹ and expert opinion. Treatment recommendations often do not distinguish CNS tuberculomas from TB meningitis.¹⁰ CNS tuberculomas are commonly treated with a minimum of 12 months of therapy, generally using the same medications and dosages used in the treatment of pulmonary TB, starting with 4 first-line agents: isoniazid, rifampin, pyrazinamide, and ethambutol. Modification of the treatment regimen may be made once sensitivities are available.¹⁰

Our patient. After cultures were determined to be pan-sensitive, our patient’s treatment regimen was simplified to rifampin and isoniazid, which she continued for the remainder of her treatment course. Her treatment was discontinued after 18 months when quarterly MRIs showed stabilization of the tuberculomas (FIGURE 2).

Following her surgery, she was started on levetiractam for seizure prophylaxis. She subsequently had a seizure on 2 occasions when the medication was discontinued or decreased, so we chose to continue it. The patient is asymptomatic from her disease with no residual deficits.

THE TAKEAWAY

A change in headache patterns in a patient over the age of 50 is a red flag that warrants imaging. In patients from countries where TB is endemic,¹¹ consider neurotuberculosis in the differential diagnosis of worsening headaches and progressive neurologic symptoms.

A diagnosis of CNS TB can be difficult and requires a high level of clinical suspicion, but early diagnosis and treatment of neurotuberculosis can minimize the high risk of morbidity and mortality. Treatment for TB shouldn’t be withheld in cases in which there’s a strong clinical suspicion for TB, but for which a definitive diagnosis is still pending.

CASE 1

A 50-year-old man sought care for progressive dyspnea on exertion, abdominal bloating, and bilateral leg edema. He had hypertension that was being treated with atenolol, nifedipine, and enalapril. On examination, his blood pressure was 157/80 mm Hg and his heart rate was 50 beats/min. Jugular venous pressure was grossly elevated with occasional cannon A waves. The patient also had decreased breath sounds in both lower lung zones and moderate pitting edema up to the knees. A chest x-ray showed a small bilateral pleural effusion and no cardiomegaly. An electrocardiogram revealed complete atrioventricular (AV) block with a ventricular response of 50 beats/min. Computed tomography (CT) angiography revealed no evidence of a pulmonary embolus, but did show several enlarged (up to 3.5 cm in diameter) lymph nodes in the upper and middle mediastinum (FIGURE 1). We performed an echocardiogram.

CASE 2

A 79-year-old man with hypertension and diabetes presented to our medical center with acute dyspnea. During the physical examination, we noted bilateral diminished breath sounds with expiratory wheezes and an irregular pulse. Chest x-ray showed mild pulmonary congestion. A chest CT demonstrated bilateral small pleural effusions and multiple enlarged mediastinal lymph nodes with a maximal diameter of 2.4 cm (FIGURE 2A). One week later, the patient’s shortness of breath increased and he was hospitalized. A chest x-ray at that time showed moderate pulmonary congestion, so we performed an echocardiogram.

THE DIAGNOSIS

The echocardiogram for the 50-year-old patient in Case 1 revealed a mildly dilated left ventricle with normal systolic function, diastolic left ventricular (LV) dysfunction, moderate tricuspid regurgitation, and mild pulmonary hypertension. Extensive testing for malignancy and tuberculosis was negative.

For the 79-year-old patient in Case 2, echocardiography demonstrated concentric LV hypertrophy, mild dilatation of the left ventricle, normal LV systolic function, LV diastolic dysfunction with elevated LV diastolic filling pressure, and mild-to-moderate pulmonary hypertension.

Based on these results, we diagnosed both patients with diastolic heart failure. The patient in the second case had features of cardiac asthma, as well. Both patients had also developed reversible mediastinal lymphadenopathy (MLN), of which the diastolic heart failure was the only apparent cause. In both cases, radiologists did not note any suspicious findings for malignancy beyond the MLN.

DISCUSSION

Systolic heart failure has been previously recognized as a cause of MLN.^1,2 Other causes of MLN include sarcoidosis, various malignancies, pulmonary infections, and occupational lung diseases. There are, however, no reports of MLN in patients with diastolic heart failure.

Heart failure and MLN. Slanetz et al reported one series of 46 patients who had undergone CT of the chest during periods of congestive heart failure (CHF).¹ There was mediastinal lymph node enlargement in 55% of these patients. In a subset of 17 patients who had elevated capillary wedge pressure, 82% had some degree of lymphadenopathy.

Erly et al² retrospectively studied 44 patients who had a thoracic CT performed before cardiac transplantation. Twenty-nine (66%) had at least one enlarged mediastinal lymph node (>1 cm). Eighty-one percent of patients with an ejection fraction <35% had lymphadenopathy, while none of the patients with an ejection fraction >35% had lymphadenopathy. Most enlarged lymph nodes were pretracheal, with a mean short axis diameter of 1.3 cm.

However, Storto et al reported that an association between CHF and MLN was not found in 7 patients undergoing high-resolution CT imaging.³ There are also cases of MLN in patients with pulmonary hypertension without systolic dysfunction.⁴

Chabbert et al studied 31 consecutive patients with subacute left heart failure (mean ejection fraction, 39%).⁵ Enlarged mediastinal lymph nodes were present in 13 patients (42%). Other radiographic features included blurred contour of the lymph nodes in 5 patients (16%) and hazy mediastinal fat in one patient (3%). Follow-up CT showed a significant decrease in the size of the lymph nodes in 8 of 13 patients (62%) following initiation of treatment.

Heart failure and malignancy. A PubMed search with the keywords “diastolic dysfunction” and “lymphoma” found 7 references in the English language. There is a report of 125 survivors of childhood lymphomas treated with mediastinal radiotherapy and anthracyclines,⁶ another of 44 children treated for acute lymphoblastic leukemia and Hodgkin’s lymphoma⁷, a report of 294 patients who had received mediastinal irradiation for the treatment of Hodgkin’s disease,⁸ and another of 106 survivors of non-Hodgkin’s and Hodgkin’s lymphomas.⁹ None of these reports, however, made any mention of mediastinal lymphadenopathy.

What caused the lymphadenopathy in our patients?

Our 2 patients had volume overload due to diastolic dysfunction with elevated LV end diastolic pressure. Our first patient also had a loss of AV synchronization—which was reversible upon pacemaker insertion—that probably exacerbated the heart failure.

The mechanism for the lymphadenopathy is not clear, but may be due to cardiogenic pulmonary edema causing distension of the pulmonary lymphatic vessels and pulmonary hypertension. In a study of patients with severe systolic dysfunction undergoing evaluation for cardiac transplant, there was a relationship (albeit weak), between MLN and mitral regurgitation, tricuspid regurgitation, elevated mean pulmonary artery pressure, elevated pulmonary capillary wedge pressure, and elevated right atrial pressure.¹⁰

How to accurately detect and treat MLN

MLN may be detected by chest x-ray, CT, magnetic resonance imaging, or endoscopic ultrasound examinations. The clinical situation will dictate the imaging modality used. Keep in mind that it is difficult to make a comparison between a finding of lymphadenopathy on one modality and another, especially if one is looking for a change in size.

Up until now, we were not aware of any other cases of MLN linked to diastolic heart failure.

If clinically appropriate, a trial of diuretics, such as intravenous (IV) furosemide 80 mg, should be considered before embarking on invasive procedures such as mediastinal lymph node biopsy.

Our patients. The 50-year-old man in Case 1 responded well to 80 mg of IV furosemide after one hour and improved further upon receipt of a pacemaker the next day. A repeat thoracic CT one month later showed complete resolution of the MLN.

The 79-year-old man in Case 2 also received 80 mg of IV furosemide and improved within 3 hours. A month later, a repeat thoracic CT showed a significant reduction in the size of all the enlarged lymph nodes (FIGURE 2B).

THE TAKEAWAY

The importance of these 2 cases is that they show that heart failure—even diastolic alone—can produce enlarged mediastinal lymph nodes. In patients with heart failure in whom unexpected MLN is detected, consideration should be given to performing a repeat imaging examination after the administration of diuretics.

CASE 1

A 50-year-old man sought care for progressive dyspnea on exertion, abdominal bloating, and bilateral leg edema. He had hypertension that was being treated with atenolol, nifedipine, and enalapril. On examination, his blood pressure was 157/80 mm Hg and his heart rate was 50 beats/min. Jugular venous pressure was grossly elevated with occasional cannon A waves. The patient also had decreased breath sounds in both lower lung zones and moderate pitting edema up to the knees. A chest x-ray showed a small bilateral pleural effusion and no cardiomegaly. An electrocardiogram revealed complete atrioventricular (AV) block with a ventricular response of 50 beats/min. Computed tomography (CT) angiography revealed no evidence of a pulmonary embolus, but did show several enlarged (up to 3.5 cm in diameter) lymph nodes in the upper and middle mediastinum (FIGURE 1). We performed an echocardiogram.

CASE 2

A 79-year-old man with hypertension and diabetes presented to our medical center with acute dyspnea. During the physical examination, we noted bilateral diminished breath sounds with expiratory wheezes and an irregular pulse. Chest x-ray showed mild pulmonary congestion. A chest CT demonstrated bilateral small pleural effusions and multiple enlarged mediastinal lymph nodes with a maximal diameter of 2.4 cm (FIGURE 2A). One week later, the patient’s shortness of breath increased and he was hospitalized. A chest x-ray at that time showed moderate pulmonary congestion, so we performed an echocardiogram.

THE DIAGNOSIS

The echocardiogram for the 50-year-old patient in Case 1 revealed a mildly dilated left ventricle with normal systolic function, diastolic left ventricular (LV) dysfunction, moderate tricuspid regurgitation, and mild pulmonary hypertension. Extensive testing for malignancy and tuberculosis was negative.

For the 79-year-old patient in Case 2, echocardiography demonstrated concentric LV hypertrophy, mild dilatation of the left ventricle, normal LV systolic function, LV diastolic dysfunction with elevated LV diastolic filling pressure, and mild-to-moderate pulmonary hypertension.

Based on these results, we diagnosed both patients with diastolic heart failure. The patient in the second case had features of cardiac asthma, as well. Both patients had also developed reversible mediastinal lymphadenopathy (MLN), of which the diastolic heart failure was the only apparent cause. In both cases, radiologists did not note any suspicious findings for malignancy beyond the MLN.

DISCUSSION

Systolic heart failure has been previously recognized as a cause of MLN.^1,2 Other causes of MLN include sarcoidosis, various malignancies, pulmonary infections, and occupational lung diseases. There are, however, no reports of MLN in patients with diastolic heart failure.

Heart failure and MLN. Slanetz et al reported one series of 46 patients who had undergone CT of the chest during periods of congestive heart failure (CHF).¹ There was mediastinal lymph node enlargement in 55% of these patients. In a subset of 17 patients who had elevated capillary wedge pressure, 82% had some degree of lymphadenopathy.

Erly et al² retrospectively studied 44 patients who had a thoracic CT performed before cardiac transplantation. Twenty-nine (66%) had at least one enlarged mediastinal lymph node (>1 cm). Eighty-one percent of patients with an ejection fraction <35% had lymphadenopathy, while none of the patients with an ejection fraction >35% had lymphadenopathy. Most enlarged lymph nodes were pretracheal, with a mean short axis diameter of 1.3 cm.

However, Storto et al reported that an association between CHF and MLN was not found in 7 patients undergoing high-resolution CT imaging.³ There are also cases of MLN in patients with pulmonary hypertension without systolic dysfunction.⁴

Chabbert et al studied 31 consecutive patients with subacute left heart failure (mean ejection fraction, 39%).⁵ Enlarged mediastinal lymph nodes were present in 13 patients (42%). Other radiographic features included blurred contour of the lymph nodes in 5 patients (16%) and hazy mediastinal fat in one patient (3%). Follow-up CT showed a significant decrease in the size of the lymph nodes in 8 of 13 patients (62%) following initiation of treatment.

Heart failure and malignancy. A PubMed search with the keywords “diastolic dysfunction” and “lymphoma” found 7 references in the English language. There is a report of 125 survivors of childhood lymphomas treated with mediastinal radiotherapy and anthracyclines,⁶ another of 44 children treated for acute lymphoblastic leukemia and Hodgkin’s lymphoma⁷, a report of 294 patients who had received mediastinal irradiation for the treatment of Hodgkin’s disease,⁸ and another of 106 survivors of non-Hodgkin’s and Hodgkin’s lymphomas.⁹ None of these reports, however, made any mention of mediastinal lymphadenopathy.

What caused the lymphadenopathy in our patients?

Our 2 patients had volume overload due to diastolic dysfunction with elevated LV end diastolic pressure. Our first patient also had a loss of AV synchronization—which was reversible upon pacemaker insertion—that probably exacerbated the heart failure.

The mechanism for the lymphadenopathy is not clear, but may be due to cardiogenic pulmonary edema causing distension of the pulmonary lymphatic vessels and pulmonary hypertension. In a study of patients with severe systolic dysfunction undergoing evaluation for cardiac transplant, there was a relationship (albeit weak), between MLN and mitral regurgitation, tricuspid regurgitation, elevated mean pulmonary artery pressure, elevated pulmonary capillary wedge pressure, and elevated right atrial pressure.¹⁰

How to accurately detect and treat MLN

MLN may be detected by chest x-ray, CT, magnetic resonance imaging, or endoscopic ultrasound examinations. The clinical situation will dictate the imaging modality used. Keep in mind that it is difficult to make a comparison between a finding of lymphadenopathy on one modality and another, especially if one is looking for a change in size.

Up until now, we were not aware of any other cases of MLN linked to diastolic heart failure.

If clinically appropriate, a trial of diuretics, such as intravenous (IV) furosemide 80 mg, should be considered before embarking on invasive procedures such as mediastinal lymph node biopsy.

Our patients. The 50-year-old man in Case 1 responded well to 80 mg of IV furosemide after one hour and improved further upon receipt of a pacemaker the next day. A repeat thoracic CT one month later showed complete resolution of the MLN.

The 79-year-old man in Case 2 also received 80 mg of IV furosemide and improved within 3 hours. A month later, a repeat thoracic CT showed a significant reduction in the size of all the enlarged lymph nodes (FIGURE 2B).

THE TAKEAWAY

The importance of these 2 cases is that they show that heart failure—even diastolic alone—can produce enlarged mediastinal lymph nodes. In patients with heart failure in whom unexpected MLN is detected, consideration should be given to performing a repeat imaging examination after the administration of diuretics.

CASE 1

A 50-year-old man sought care for progressive dyspnea on exertion, abdominal bloating, and bilateral leg edema. He had hypertension that was being treated with atenolol, nifedipine, and enalapril. On examination, his blood pressure was 157/80 mm Hg and his heart rate was 50 beats/min. Jugular venous pressure was grossly elevated with occasional cannon A waves. The patient also had decreased breath sounds in both lower lung zones and moderate pitting edema up to the knees. A chest x-ray showed a small bilateral pleural effusion and no cardiomegaly. An electrocardiogram revealed complete atrioventricular (AV) block with a ventricular response of 50 beats/min. Computed tomography (CT) angiography revealed no evidence of a pulmonary embolus, but did show several enlarged (up to 3.5 cm in diameter) lymph nodes in the upper and middle mediastinum (FIGURE 1). We performed an echocardiogram.

CASE 2

A 79-year-old man with hypertension and diabetes presented to our medical center with acute dyspnea. During the physical examination, we noted bilateral diminished breath sounds with expiratory wheezes and an irregular pulse. Chest x-ray showed mild pulmonary congestion. A chest CT demonstrated bilateral small pleural effusions and multiple enlarged mediastinal lymph nodes with a maximal diameter of 2.4 cm (FIGURE 2A). One week later, the patient’s shortness of breath increased and he was hospitalized. A chest x-ray at that time showed moderate pulmonary congestion, so we performed an echocardiogram.

THE DIAGNOSIS

The echocardiogram for the 50-year-old patient in Case 1 revealed a mildly dilated left ventricle with normal systolic function, diastolic left ventricular (LV) dysfunction, moderate tricuspid regurgitation, and mild pulmonary hypertension. Extensive testing for malignancy and tuberculosis was negative.

For the 79-year-old patient in Case 2, echocardiography demonstrated concentric LV hypertrophy, mild dilatation of the left ventricle, normal LV systolic function, LV diastolic dysfunction with elevated LV diastolic filling pressure, and mild-to-moderate pulmonary hypertension.

Based on these results, we diagnosed both patients with diastolic heart failure. The patient in the second case had features of cardiac asthma, as well. Both patients had also developed reversible mediastinal lymphadenopathy (MLN), of which the diastolic heart failure was the only apparent cause. In both cases, radiologists did not note any suspicious findings for malignancy beyond the MLN.

DISCUSSION

Systolic heart failure has been previously recognized as a cause of MLN.^1,2 Other causes of MLN include sarcoidosis, various malignancies, pulmonary infections, and occupational lung diseases. There are, however, no reports of MLN in patients with diastolic heart failure.

Heart failure and MLN. Slanetz et al reported one series of 46 patients who had undergone CT of the chest during periods of congestive heart failure (CHF).¹ There was mediastinal lymph node enlargement in 55% of these patients. In a subset of 17 patients who had elevated capillary wedge pressure, 82% had some degree of lymphadenopathy.

Erly et al² retrospectively studied 44 patients who had a thoracic CT performed before cardiac transplantation. Twenty-nine (66%) had at least one enlarged mediastinal lymph node (>1 cm). Eighty-one percent of patients with an ejection fraction <35% had lymphadenopathy, while none of the patients with an ejection fraction >35% had lymphadenopathy. Most enlarged lymph nodes were pretracheal, with a mean short axis diameter of 1.3 cm.

However, Storto et al reported that an association between CHF and MLN was not found in 7 patients undergoing high-resolution CT imaging.³ There are also cases of MLN in patients with pulmonary hypertension without systolic dysfunction.⁴

Chabbert et al studied 31 consecutive patients with subacute left heart failure (mean ejection fraction, 39%).⁵ Enlarged mediastinal lymph nodes were present in 13 patients (42%). Other radiographic features included blurred contour of the lymph nodes in 5 patients (16%) and hazy mediastinal fat in one patient (3%). Follow-up CT showed a significant decrease in the size of the lymph nodes in 8 of 13 patients (62%) following initiation of treatment.

Heart failure and malignancy. A PubMed search with the keywords “diastolic dysfunction” and “lymphoma” found 7 references in the English language. There is a report of 125 survivors of childhood lymphomas treated with mediastinal radiotherapy and anthracyclines,⁶ another of 44 children treated for acute lymphoblastic leukemia and Hodgkin’s lymphoma⁷, a report of 294 patients who had received mediastinal irradiation for the treatment of Hodgkin’s disease,⁸ and another of 106 survivors of non-Hodgkin’s and Hodgkin’s lymphomas.⁹ None of these reports, however, made any mention of mediastinal lymphadenopathy.

What caused the lymphadenopathy in our patients?

Our 2 patients had volume overload due to diastolic dysfunction with elevated LV end diastolic pressure. Our first patient also had a loss of AV synchronization—which was reversible upon pacemaker insertion—that probably exacerbated the heart failure.

The mechanism for the lymphadenopathy is not clear, but may be due to cardiogenic pulmonary edema causing distension of the pulmonary lymphatic vessels and pulmonary hypertension. In a study of patients with severe systolic dysfunction undergoing evaluation for cardiac transplant, there was a relationship (albeit weak), between MLN and mitral regurgitation, tricuspid regurgitation, elevated mean pulmonary artery pressure, elevated pulmonary capillary wedge pressure, and elevated right atrial pressure.¹⁰

How to accurately detect and treat MLN

MLN may be detected by chest x-ray, CT, magnetic resonance imaging, or endoscopic ultrasound examinations. The clinical situation will dictate the imaging modality used. Keep in mind that it is difficult to make a comparison between a finding of lymphadenopathy on one modality and another, especially if one is looking for a change in size.

Up until now, we were not aware of any other cases of MLN linked to diastolic heart failure.

If clinically appropriate, a trial of diuretics, such as intravenous (IV) furosemide 80 mg, should be considered before embarking on invasive procedures such as mediastinal lymph node biopsy.

Our patients. The 50-year-old man in Case 1 responded well to 80 mg of IV furosemide after one hour and improved further upon receipt of a pacemaker the next day. A repeat thoracic CT one month later showed complete resolution of the MLN.

The 79-year-old man in Case 2 also received 80 mg of IV furosemide and improved within 3 hours. A month later, a repeat thoracic CT showed a significant reduction in the size of all the enlarged lymph nodes (FIGURE 2B).

THE TAKEAWAY

The importance of these 2 cases is that they show that heart failure—even diastolic alone—can produce enlarged mediastinal lymph nodes. In patients with heart failure in whom unexpected MLN is detected, consideration should be given to performing a repeat imaging examination after the administration of diuretics.

A 45-year-old woman presented to our hospital with recurrent cirrhosis and sepsis secondary to a hepatic abscess from Pseudomonas aeromonas and Candida albicans. Ten years earlier, she had received a liver transplant due to sclerosing cholangitis. The patient had a history of nausea from her liver disease and malnutrition due to a diet that consisted predominantly of cereal with minimal fresh fruits and vegetables. Her family reported that she bruised easily and had worsening dry, flaky skin.

The physical examination revealed jaundice, scleral icterus, purpuric macules, superficial desquamation, gingivitis (FIGURE 1), and perifollicular hemorrhages with corkscrew hairs (FIGURES 2 and 3). The patient also had acute kidney injury, delirium, and pancytopenia. She was admitted to the hospital and was started on piperacillin-tazobactam and fluconazole for sepsis, as well as rifaximin and lactulose for hepatic encephalopathy.

WHAT IS YOUR DIAGNOSIS?
HOW WOULD YOU TREAT THIS PATIENT?

Diagnosis: Vitamin C deficiency

We diagnosed this patient with vitamin C deficiency (scurvy) based on the fact that she had perifollicular hemorrhages with corkscrew hairs, which is a pathognomonic feature of the deficiency. The diagnosis was confirmed with a blood vitamin C level of 10 mcmol/L (normal range: 11-114 mcmol/L). It’s important to note that a vitamin C level drawn after hospitalization may be falsely normal due to an improved diet during hospitalization, so a normal vitamin C level doesn’t always rule out a deficiency.

Vitamin C is absorbed from the small intestine and excreted renally. A low vitamin C level occurs in the presence of several conditions—specifically alcoholism and critical illnesses such as sepsis, trauma, major surgery, or stroke—possibly due to decreased absorption and increased oxidative stress. Vitamin C is necessary for multiple hydroxylation reactions, including hydroxylation of proline and lysine in collagen synthesis, beta-hydroxybutyric acid in carnitine synthesis, and dopamine-beta-hydroxylase in catecholamine synthesis.¹

Suspect vitamin C deficiency in patients with alcoholism, a poor diet, and in those who are critically ill.Early vitamin C deficiency presents with nonspecific symptoms, such as malaise, fatigue, and lethargy, followed by the development of anemia, myalgia, bone pain, easy bruising, edema, petechiae, perifollicular hemorrhages, corkscrew hairs, gingivitis, poor wound healing, and mood changes. If untreated, jaundice, neuropathy, hemolysis, seizures, and death can occur.^2-4

Perifollicular hemorrhages with corkscrew hairs are characteristic of the Dx

The differential diagnosis of vitamin C deficiency includes vasculitis, thrombocytopenia, multiple myeloma, and folliculitis.

Vasculitis typically presents with palpable purpura and is not exclusively perifollicular.⁵ Thrombocytopenia may present with petechiae, but the petechiae are generally not perifollicular and hair shaft abnormalities are generally absent. Multiple myeloma may present with purpura with minimal trauma and larger ecchymosis that isn’t petechial in appearance. Folliculitis typically presents with folliculocentric pustules that have surrounding erythema, but no hemorrhaging.

Suspect vitamin C deficiency in patients with alcoholism, a poor diet, and those who are critically ill.⁶ During the physical exam, look for ecchymosis, edema, gingivitis, impaired wound healing, jaundice, and the tell-tale sign of perifollicular hemorrhages with corkscrew hairs.⁷

If lab values and/or circumstances leave doubt as to whether a true vitamin C deficiency exists, a punch biopsy of an area of perifollicular hemorrhage may be performed. The punch biopsy should demonstrate follicular hyperkeratosis overlying multiple fragmented hair shafts that are surrounded by a perifollicular lymphohistiocytic infiltrate with extravasated red blood cells.⁴

Treat with vitamin C

Vitamin C can be replaced via the oral or intravenous (IV) route. There is currently no consensus on a single best replacement regimen, but several effective regimens have been reported in the literature.^8,9

We started our patient on IV vitamin C 1 g/d, which improved her cutaneous lesions. Unfortunately, though, she succumbed to complications of her liver disease shortly after starting the therapy.

CORRESPONDENCE
Krishna AJ Mutgi, MD, Nationwide Children’s Hospital, 555 S. 18th Street, Columbus, OH 43205; [email protected].

A 45-year-old woman presented to our hospital with recurrent cirrhosis and sepsis secondary to a hepatic abscess from Pseudomonas aeromonas and Candida albicans. Ten years earlier, she had received a liver transplant due to sclerosing cholangitis. The patient had a history of nausea from her liver disease and malnutrition due to a diet that consisted predominantly of cereal with minimal fresh fruits and vegetables. Her family reported that she bruised easily and had worsening dry, flaky skin.

The physical examination revealed jaundice, scleral icterus, purpuric macules, superficial desquamation, gingivitis (FIGURE 1), and perifollicular hemorrhages with corkscrew hairs (FIGURES 2 and 3). The patient also had acute kidney injury, delirium, and pancytopenia. She was admitted to the hospital and was started on piperacillin-tazobactam and fluconazole for sepsis, as well as rifaximin and lactulose for hepatic encephalopathy.

WHAT IS YOUR DIAGNOSIS?
HOW WOULD YOU TREAT THIS PATIENT?

Diagnosis: Vitamin C deficiency

We diagnosed this patient with vitamin C deficiency (scurvy) based on the fact that she had perifollicular hemorrhages with corkscrew hairs, which is a pathognomonic feature of the deficiency. The diagnosis was confirmed with a blood vitamin C level of 10 mcmol/L (normal range: 11-114 mcmol/L). It’s important to note that a vitamin C level drawn after hospitalization may be falsely normal due to an improved diet during hospitalization, so a normal vitamin C level doesn’t always rule out a deficiency.

Vitamin C is absorbed from the small intestine and excreted renally. A low vitamin C level occurs in the presence of several conditions—specifically alcoholism and critical illnesses such as sepsis, trauma, major surgery, or stroke—possibly due to decreased absorption and increased oxidative stress. Vitamin C is necessary for multiple hydroxylation reactions, including hydroxylation of proline and lysine in collagen synthesis, beta-hydroxybutyric acid in carnitine synthesis, and dopamine-beta-hydroxylase in catecholamine synthesis.¹

Suspect vitamin C deficiency in patients with alcoholism, a poor diet, and in those who are critically ill.Early vitamin C deficiency presents with nonspecific symptoms, such as malaise, fatigue, and lethargy, followed by the development of anemia, myalgia, bone pain, easy bruising, edema, petechiae, perifollicular hemorrhages, corkscrew hairs, gingivitis, poor wound healing, and mood changes. If untreated, jaundice, neuropathy, hemolysis, seizures, and death can occur.^2-4

Perifollicular hemorrhages with corkscrew hairs are characteristic of the Dx

The differential diagnosis of vitamin C deficiency includes vasculitis, thrombocytopenia, multiple myeloma, and folliculitis.

Vasculitis typically presents with palpable purpura and is not exclusively perifollicular.⁵ Thrombocytopenia may present with petechiae, but the petechiae are generally not perifollicular and hair shaft abnormalities are generally absent. Multiple myeloma may present with purpura with minimal trauma and larger ecchymosis that isn’t petechial in appearance. Folliculitis typically presents with folliculocentric pustules that have surrounding erythema, but no hemorrhaging.

Suspect vitamin C deficiency in patients with alcoholism, a poor diet, and those who are critically ill.⁶ During the physical exam, look for ecchymosis, edema, gingivitis, impaired wound healing, jaundice, and the tell-tale sign of perifollicular hemorrhages with corkscrew hairs.⁷

If lab values and/or circumstances leave doubt as to whether a true vitamin C deficiency exists, a punch biopsy of an area of perifollicular hemorrhage may be performed. The punch biopsy should demonstrate follicular hyperkeratosis overlying multiple fragmented hair shafts that are surrounded by a perifollicular lymphohistiocytic infiltrate with extravasated red blood cells.⁴

Treat with vitamin C

Vitamin C can be replaced via the oral or intravenous (IV) route. There is currently no consensus on a single best replacement regimen, but several effective regimens have been reported in the literature.^8,9

We started our patient on IV vitamin C 1 g/d, which improved her cutaneous lesions. Unfortunately, though, she succumbed to complications of her liver disease shortly after starting the therapy.

CORRESPONDENCE
Krishna AJ Mutgi, MD, Nationwide Children’s Hospital, 555 S. 18th Street, Columbus, OH 43205; [email protected].

A 45-year-old woman presented to our hospital with recurrent cirrhosis and sepsis secondary to a hepatic abscess from Pseudomonas aeromonas and Candida albicans. Ten years earlier, she had received a liver transplant due to sclerosing cholangitis. The patient had a history of nausea from her liver disease and malnutrition due to a diet that consisted predominantly of cereal with minimal fresh fruits and vegetables. Her family reported that she bruised easily and had worsening dry, flaky skin.

The physical examination revealed jaundice, scleral icterus, purpuric macules, superficial desquamation, gingivitis (FIGURE 1), and perifollicular hemorrhages with corkscrew hairs (FIGURES 2 and 3). The patient also had acute kidney injury, delirium, and pancytopenia. She was admitted to the hospital and was started on piperacillin-tazobactam and fluconazole for sepsis, as well as rifaximin and lactulose for hepatic encephalopathy.

WHAT IS YOUR DIAGNOSIS?
HOW WOULD YOU TREAT THIS PATIENT?

Diagnosis: Vitamin C deficiency

We diagnosed this patient with vitamin C deficiency (scurvy) based on the fact that she had perifollicular hemorrhages with corkscrew hairs, which is a pathognomonic feature of the deficiency. The diagnosis was confirmed with a blood vitamin C level of 10 mcmol/L (normal range: 11-114 mcmol/L). It’s important to note that a vitamin C level drawn after hospitalization may be falsely normal due to an improved diet during hospitalization, so a normal vitamin C level doesn’t always rule out a deficiency.

Vitamin C is absorbed from the small intestine and excreted renally. A low vitamin C level occurs in the presence of several conditions—specifically alcoholism and critical illnesses such as sepsis, trauma, major surgery, or stroke—possibly due to decreased absorption and increased oxidative stress. Vitamin C is necessary for multiple hydroxylation reactions, including hydroxylation of proline and lysine in collagen synthesis, beta-hydroxybutyric acid in carnitine synthesis, and dopamine-beta-hydroxylase in catecholamine synthesis.¹

Suspect vitamin C deficiency in patients with alcoholism, a poor diet, and in those who are critically ill.Early vitamin C deficiency presents with nonspecific symptoms, such as malaise, fatigue, and lethargy, followed by the development of anemia, myalgia, bone pain, easy bruising, edema, petechiae, perifollicular hemorrhages, corkscrew hairs, gingivitis, poor wound healing, and mood changes. If untreated, jaundice, neuropathy, hemolysis, seizures, and death can occur.^2-4

Perifollicular hemorrhages with corkscrew hairs are characteristic of the Dx

The differential diagnosis of vitamin C deficiency includes vasculitis, thrombocytopenia, multiple myeloma, and folliculitis.

Vasculitis typically presents with palpable purpura and is not exclusively perifollicular.⁵ Thrombocytopenia may present with petechiae, but the petechiae are generally not perifollicular and hair shaft abnormalities are generally absent. Multiple myeloma may present with purpura with minimal trauma and larger ecchymosis that isn’t petechial in appearance. Folliculitis typically presents with folliculocentric pustules that have surrounding erythema, but no hemorrhaging.

Suspect vitamin C deficiency in patients with alcoholism, a poor diet, and those who are critically ill.⁶ During the physical exam, look for ecchymosis, edema, gingivitis, impaired wound healing, jaundice, and the tell-tale sign of perifollicular hemorrhages with corkscrew hairs.⁷

If lab values and/or circumstances leave doubt as to whether a true vitamin C deficiency exists, a punch biopsy of an area of perifollicular hemorrhage may be performed. The punch biopsy should demonstrate follicular hyperkeratosis overlying multiple fragmented hair shafts that are surrounded by a perifollicular lymphohistiocytic infiltrate with extravasated red blood cells.⁴

Treat with vitamin C

Vitamin C can be replaced via the oral or intravenous (IV) route. There is currently no consensus on a single best replacement regimen, but several effective regimens have been reported in the literature.^8,9

We started our patient on IV vitamin C 1 g/d, which improved her cutaneous lesions. Unfortunately, though, she succumbed to complications of her liver disease shortly after starting the therapy.

CORRESPONDENCE
Krishna AJ Mutgi, MD, Nationwide Children’s Hospital, 555 S. 18th Street, Columbus, OH 43205; [email protected].