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A 35-year-old with erythematous, dusky patches on both lower extremities
Zinc deficiency may be inherited or acquired. Acrodermatitis enteropathica is an autosomal recessive genetic disorder caused by a mutation in the gene that encodes a zinc transporter. It presents in infancy with the classic triad of diarrhea, dermatitis, and alopecia. Acquired zinc deficiency is due to causes such as alcoholism, malabsorption disorders like cystic fibrosis, inflammatory disease, gastrointestinal surgery, metabolic stress following general surgery, eating disorders, infections, malignancy, or occasionally in pregnancy. Classically, the face, groin, and extremities are affected (often acral), with erythematous, scaly patches. Pustules and bullae may be present. Angular cheilitis is often seen.
Necrolytic migratory erythema, or glucagonoma syndrome, is a very rare syndrome that presents as annular, erythematous patches with blisters that erode on the lower extremities and groin. The condition results from a cancerous tumor in the alpha cells of the pancreas called a glucagonoma, which secretes the hormone glucagon. It is often associated with diabetes and hyperglycemia.
Necrolytic acral erythema resembles acrodermatitis enteropathica and necrolytic migratory erythema clinically, however, it is associated with hepatitis C infection. Lesions are plaques with well defined borders distributed acrally. Treatment of the hepatitis C often improves the dermatitis.
Our patient’s blood work was consistent with nutritional deficiency and revealed low levels of zinc, vitamin A, ceruloplasmin, albumin and prealbumin, total protein, calcium, selenium, vitamin E, vitamin K, and vitamin C. Her hemoglobin A1C was under 4. Her hepatitis serologies were negative. The patient received total parenteral nutrition with subsequent complete resolution of her rash. Follow up for gastric bypass patients should be performed long term as they are at risk for nutritional deficiencies.
Dr. Bilu Martin, and Andrew Harris, DO, Mount Sinai Medical Center, Aventura, Fla., provided the case and photos.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
Dermatol Online J. 2016 Nov 15; 22(11):13030.
Andrews’ Disease of the Skin: Clinical Dermatology. Philadelphia: Saunders Elsevier, 2006.
Bolognia et al. Dermatology. St. Louis: Mosby/Elsevier, 2008.
Zinc deficiency may be inherited or acquired. Acrodermatitis enteropathica is an autosomal recessive genetic disorder caused by a mutation in the gene that encodes a zinc transporter. It presents in infancy with the classic triad of diarrhea, dermatitis, and alopecia. Acquired zinc deficiency is due to causes such as alcoholism, malabsorption disorders like cystic fibrosis, inflammatory disease, gastrointestinal surgery, metabolic stress following general surgery, eating disorders, infections, malignancy, or occasionally in pregnancy. Classically, the face, groin, and extremities are affected (often acral), with erythematous, scaly patches. Pustules and bullae may be present. Angular cheilitis is often seen.
Necrolytic migratory erythema, or glucagonoma syndrome, is a very rare syndrome that presents as annular, erythematous patches with blisters that erode on the lower extremities and groin. The condition results from a cancerous tumor in the alpha cells of the pancreas called a glucagonoma, which secretes the hormone glucagon. It is often associated with diabetes and hyperglycemia.
Necrolytic acral erythema resembles acrodermatitis enteropathica and necrolytic migratory erythema clinically, however, it is associated with hepatitis C infection. Lesions are plaques with well defined borders distributed acrally. Treatment of the hepatitis C often improves the dermatitis.
Our patient’s blood work was consistent with nutritional deficiency and revealed low levels of zinc, vitamin A, ceruloplasmin, albumin and prealbumin, total protein, calcium, selenium, vitamin E, vitamin K, and vitamin C. Her hemoglobin A1C was under 4. Her hepatitis serologies were negative. The patient received total parenteral nutrition with subsequent complete resolution of her rash. Follow up for gastric bypass patients should be performed long term as they are at risk for nutritional deficiencies.
Dr. Bilu Martin, and Andrew Harris, DO, Mount Sinai Medical Center, Aventura, Fla., provided the case and photos.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
Dermatol Online J. 2016 Nov 15; 22(11):13030.
Andrews’ Disease of the Skin: Clinical Dermatology. Philadelphia: Saunders Elsevier, 2006.
Bolognia et al. Dermatology. St. Louis: Mosby/Elsevier, 2008.
Zinc deficiency may be inherited or acquired. Acrodermatitis enteropathica is an autosomal recessive genetic disorder caused by a mutation in the gene that encodes a zinc transporter. It presents in infancy with the classic triad of diarrhea, dermatitis, and alopecia. Acquired zinc deficiency is due to causes such as alcoholism, malabsorption disorders like cystic fibrosis, inflammatory disease, gastrointestinal surgery, metabolic stress following general surgery, eating disorders, infections, malignancy, or occasionally in pregnancy. Classically, the face, groin, and extremities are affected (often acral), with erythematous, scaly patches. Pustules and bullae may be present. Angular cheilitis is often seen.
Necrolytic migratory erythema, or glucagonoma syndrome, is a very rare syndrome that presents as annular, erythematous patches with blisters that erode on the lower extremities and groin. The condition results from a cancerous tumor in the alpha cells of the pancreas called a glucagonoma, which secretes the hormone glucagon. It is often associated with diabetes and hyperglycemia.
Necrolytic acral erythema resembles acrodermatitis enteropathica and necrolytic migratory erythema clinically, however, it is associated with hepatitis C infection. Lesions are plaques with well defined borders distributed acrally. Treatment of the hepatitis C often improves the dermatitis.
Our patient’s blood work was consistent with nutritional deficiency and revealed low levels of zinc, vitamin A, ceruloplasmin, albumin and prealbumin, total protein, calcium, selenium, vitamin E, vitamin K, and vitamin C. Her hemoglobin A1C was under 4. Her hepatitis serologies were negative. The patient received total parenteral nutrition with subsequent complete resolution of her rash. Follow up for gastric bypass patients should be performed long term as they are at risk for nutritional deficiencies.
Dr. Bilu Martin, and Andrew Harris, DO, Mount Sinai Medical Center, Aventura, Fla., provided the case and photos.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
Dermatol Online J. 2016 Nov 15; 22(11):13030.
Andrews’ Disease of the Skin: Clinical Dermatology. Philadelphia: Saunders Elsevier, 2006.
Bolognia et al. Dermatology. St. Louis: Mosby/Elsevier, 2008.
A healthy family who had been living in Brazil presented with crusted plaques on their extremities
Trypanosomatidae
Leishmaniasis is caused by protozoa of the family Trypanosomatidae, called Leishmania. The vector is a sandfly infected with the protozoa.1
The three main forms of leishmaniasis – cutaneous, mucocutaneous, or visceral – varies with the species of organism involved, the geographic distribution, and the immune response of the patient. A majority of the cases seen in the United States are from patients who contracted the disease elsewhere, particularly from Peru and Brazil.2
Lesions can vary from asymptomatic to severe. The initial lesion typically develops within weeks or months, and presents as an erythematous papule that is seen at the bite site.3 The papule evolves into a nodule or plaque that may ulcerate and crust.3 The ulcer can be distinguished by a raised and distinct border. In older stages, atrophic scarring may be seen. In some cases, the lesions may present years after exposure, because of immunosuppression or trauma.
Histology of CL reveals tuberculoid granulomas with parasitized histiocytes present. Amastigotes with distinct nuclei and kinetoplasts characterize Leishmania.2 In addition to histology, the biopsy may be sent for the press-imprint-smear method (PIS). In a study of 75 patients, the PIS method showed a higher sensitivity, as well as being a less costly and more rapid option for diagnosis.5
The treatment depends on the severity of the lesion and the species of the Leishmania genus. Mild lesions may resolve spontaneously. Topical imiquimod, cryotherapy, photodynamic therapy, and heat therapy may aid in the healing process.5 Systemic azole antifungal medications, miltefosine, and amphotericin B, and pentamidine may be used for more persistent lesions. In very severe cases, pentavalent antimonials (sodium stibogluconate, Pentostam) may be administered intravenously, although there is a high occurrence of recorded side effects.2
This case and the photos were submitted by Sabrina Liao, BS, University of California, San Diego; and Brooke Resh Sateesh, MD, San Diego Family Dermatology The case was edited by Donna Bilu Martin, MD.
References
1. Leishmaniasis – Resources for Health Professionals. Centers for Disease Control and Prevention. 2021 Jun 3.
2. Stark CG. Leishmaniasis. Medscape. 2020 Feb 18.
3. Markle WH and Makhoul K. Am Fam Physician. 2004 Mar 15;69(6):1455-604.
4. Ngan V. Leishmaniasis. DermNet NZ. 2017 Jan. 7.
5. Sousa AQ et al. Am J Trop Med Hyg. 2014 Nov;91(5):905-7.
Trypanosomatidae
Leishmaniasis is caused by protozoa of the family Trypanosomatidae, called Leishmania. The vector is a sandfly infected with the protozoa.1
The three main forms of leishmaniasis – cutaneous, mucocutaneous, or visceral – varies with the species of organism involved, the geographic distribution, and the immune response of the patient. A majority of the cases seen in the United States are from patients who contracted the disease elsewhere, particularly from Peru and Brazil.2
Lesions can vary from asymptomatic to severe. The initial lesion typically develops within weeks or months, and presents as an erythematous papule that is seen at the bite site.3 The papule evolves into a nodule or plaque that may ulcerate and crust.3 The ulcer can be distinguished by a raised and distinct border. In older stages, atrophic scarring may be seen. In some cases, the lesions may present years after exposure, because of immunosuppression or trauma.
Histology of CL reveals tuberculoid granulomas with parasitized histiocytes present. Amastigotes with distinct nuclei and kinetoplasts characterize Leishmania.2 In addition to histology, the biopsy may be sent for the press-imprint-smear method (PIS). In a study of 75 patients, the PIS method showed a higher sensitivity, as well as being a less costly and more rapid option for diagnosis.5
The treatment depends on the severity of the lesion and the species of the Leishmania genus. Mild lesions may resolve spontaneously. Topical imiquimod, cryotherapy, photodynamic therapy, and heat therapy may aid in the healing process.5 Systemic azole antifungal medications, miltefosine, and amphotericin B, and pentamidine may be used for more persistent lesions. In very severe cases, pentavalent antimonials (sodium stibogluconate, Pentostam) may be administered intravenously, although there is a high occurrence of recorded side effects.2
This case and the photos were submitted by Sabrina Liao, BS, University of California, San Diego; and Brooke Resh Sateesh, MD, San Diego Family Dermatology The case was edited by Donna Bilu Martin, MD.
References
1. Leishmaniasis – Resources for Health Professionals. Centers for Disease Control and Prevention. 2021 Jun 3.
2. Stark CG. Leishmaniasis. Medscape. 2020 Feb 18.
3. Markle WH and Makhoul K. Am Fam Physician. 2004 Mar 15;69(6):1455-604.
4. Ngan V. Leishmaniasis. DermNet NZ. 2017 Jan. 7.
5. Sousa AQ et al. Am J Trop Med Hyg. 2014 Nov;91(5):905-7.
Trypanosomatidae
Leishmaniasis is caused by protozoa of the family Trypanosomatidae, called Leishmania. The vector is a sandfly infected with the protozoa.1
The three main forms of leishmaniasis – cutaneous, mucocutaneous, or visceral – varies with the species of organism involved, the geographic distribution, and the immune response of the patient. A majority of the cases seen in the United States are from patients who contracted the disease elsewhere, particularly from Peru and Brazil.2
Lesions can vary from asymptomatic to severe. The initial lesion typically develops within weeks or months, and presents as an erythematous papule that is seen at the bite site.3 The papule evolves into a nodule or plaque that may ulcerate and crust.3 The ulcer can be distinguished by a raised and distinct border. In older stages, atrophic scarring may be seen. In some cases, the lesions may present years after exposure, because of immunosuppression or trauma.
Histology of CL reveals tuberculoid granulomas with parasitized histiocytes present. Amastigotes with distinct nuclei and kinetoplasts characterize Leishmania.2 In addition to histology, the biopsy may be sent for the press-imprint-smear method (PIS). In a study of 75 patients, the PIS method showed a higher sensitivity, as well as being a less costly and more rapid option for diagnosis.5
The treatment depends on the severity of the lesion and the species of the Leishmania genus. Mild lesions may resolve spontaneously. Topical imiquimod, cryotherapy, photodynamic therapy, and heat therapy may aid in the healing process.5 Systemic azole antifungal medications, miltefosine, and amphotericin B, and pentamidine may be used for more persistent lesions. In very severe cases, pentavalent antimonials (sodium stibogluconate, Pentostam) may be administered intravenously, although there is a high occurrence of recorded side effects.2
This case and the photos were submitted by Sabrina Liao, BS, University of California, San Diego; and Brooke Resh Sateesh, MD, San Diego Family Dermatology The case was edited by Donna Bilu Martin, MD.
References
1. Leishmaniasis – Resources for Health Professionals. Centers for Disease Control and Prevention. 2021 Jun 3.
2. Stark CG. Leishmaniasis. Medscape. 2020 Feb 18.
3. Markle WH and Makhoul K. Am Fam Physician. 2004 Mar 15;69(6):1455-604.
4. Ngan V. Leishmaniasis. DermNet NZ. 2017 Jan. 7.
5. Sousa AQ et al. Am J Trop Med Hyg. 2014 Nov;91(5):905-7.
A male with pruritic scaling and bumps in the red area of a tattoo placed months earlier
, photoallergic reactions, infectious processes because of contaminated ink or a nonsterile environment, or as a Koebner response.
Dermatitis is commonly seen in patients with a sensitivity to certain pigments. Mercury sulfide or cinnabar in red, chromium in green, and cobalt in blue are common offenders. Cadmium, which is used for yellow, may cause a photoallergic reaction following exposure to ultraviolet light. Other inorganic salts of metals used for tattooing include ferric hydrate for ochre, ferric oxide for brown, manganese salts for purple. Reactions may be seen within a few weeks up to years after the tattoo is placed.
Reactions are often confined to the tattoo and may present as erythematous papules or plaques, although lesions may also present as scaly and eczematous patches. Psoriasis, vitiligo, and lichen planus may Koebnerize and appear in the tattoo. Sarcoidosis may occur in tattoos and can be seen upon histopathologic examination. Allergic contact dermatitis may also be seen in people who receive temporary henna tattoos in which the henna dye is mixed with paraphenylenediamine (PPD).
Histologically, granulomatous, sarcoidal, and lichenoid patterns may be seen. A punch biopsy was performed in this patient that revealed a lichenoid and interstitial lymphohistiocytic infiltrate with red tattoo pigment. Special stains for PAS, GMS, FITE, and AFB were negative. There was no polarizable foreign material identified.
Treatment includes topical steroids, which may be ineffective, intralesional kenalog, and surgical excision. Laser must be used with caution, as it may aggravate the allergic reaction and cause a systemic reaction.
This case and photo were provided by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
, photoallergic reactions, infectious processes because of contaminated ink or a nonsterile environment, or as a Koebner response.
Dermatitis is commonly seen in patients with a sensitivity to certain pigments. Mercury sulfide or cinnabar in red, chromium in green, and cobalt in blue are common offenders. Cadmium, which is used for yellow, may cause a photoallergic reaction following exposure to ultraviolet light. Other inorganic salts of metals used for tattooing include ferric hydrate for ochre, ferric oxide for brown, manganese salts for purple. Reactions may be seen within a few weeks up to years after the tattoo is placed.
Reactions are often confined to the tattoo and may present as erythematous papules or plaques, although lesions may also present as scaly and eczematous patches. Psoriasis, vitiligo, and lichen planus may Koebnerize and appear in the tattoo. Sarcoidosis may occur in tattoos and can be seen upon histopathologic examination. Allergic contact dermatitis may also be seen in people who receive temporary henna tattoos in which the henna dye is mixed with paraphenylenediamine (PPD).
Histologically, granulomatous, sarcoidal, and lichenoid patterns may be seen. A punch biopsy was performed in this patient that revealed a lichenoid and interstitial lymphohistiocytic infiltrate with red tattoo pigment. Special stains for PAS, GMS, FITE, and AFB were negative. There was no polarizable foreign material identified.
Treatment includes topical steroids, which may be ineffective, intralesional kenalog, and surgical excision. Laser must be used with caution, as it may aggravate the allergic reaction and cause a systemic reaction.
This case and photo were provided by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
, photoallergic reactions, infectious processes because of contaminated ink or a nonsterile environment, or as a Koebner response.
Dermatitis is commonly seen in patients with a sensitivity to certain pigments. Mercury sulfide or cinnabar in red, chromium in green, and cobalt in blue are common offenders. Cadmium, which is used for yellow, may cause a photoallergic reaction following exposure to ultraviolet light. Other inorganic salts of metals used for tattooing include ferric hydrate for ochre, ferric oxide for brown, manganese salts for purple. Reactions may be seen within a few weeks up to years after the tattoo is placed.
Reactions are often confined to the tattoo and may present as erythematous papules or plaques, although lesions may also present as scaly and eczematous patches. Psoriasis, vitiligo, and lichen planus may Koebnerize and appear in the tattoo. Sarcoidosis may occur in tattoos and can be seen upon histopathologic examination. Allergic contact dermatitis may also be seen in people who receive temporary henna tattoos in which the henna dye is mixed with paraphenylenediamine (PPD).
Histologically, granulomatous, sarcoidal, and lichenoid patterns may be seen. A punch biopsy was performed in this patient that revealed a lichenoid and interstitial lymphohistiocytic infiltrate with red tattoo pigment. Special stains for PAS, GMS, FITE, and AFB were negative. There was no polarizable foreign material identified.
Treatment includes topical steroids, which may be ineffective, intralesional kenalog, and surgical excision. Laser must be used with caution, as it may aggravate the allergic reaction and cause a systemic reaction.
This case and photo were provided by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
A woman with scaling, and painful, crusted, erythematous papules and pustules on her face
Biopsy for this patient revealed folliculitis with Demodex mites visualized on histology. Direct immunofluorescence was negative. A KOH preparation was performed and was positive for large numbers of Demodex. Bacterial cultures were negative. The patient was started on a course of submicrobial doxycycline and ivermectin and showed marked improvement 1 month following treatment.
Demodex folliculorum and Demodex brevis (collectively referred to as Demodex) are microscopic parasitic mites that commonly live on human skin.1 Typically, the mite remains asymptomatic. However, in higher numbers, the infestation may cause dermatoses, called demodicosis. Lesions often present as itchy papules, pustules, and erythematous scaling on the face, ears, and scalp. Blepharitis may be present. Demodex folliculitis is more common in immunocompromised patients.2
Demodex may have a causative role in rosacea and present similarly, with a key difference being that Demodex-type rosacea is more scaly/dry and pustular than common rosacea.1 In Demodex folliculitis, bacterial cultures are often negative. A skin scraping for KOH will reveal increased mite colonization. The Demodex mite may also be seen in histologic slides.
Treatment of Demodex folliculitis includes crotamiton cream, permethrin cream, oral tetracyclines, topical or systemic metronidazole, and topical or oral ivermectin.
This case and photos were submitted by Susannah McClain, MD, Three Rivers Dermatology, Pittsburgh.
References
1. Rather PA and Hassan I. Indian J Dermatol. 2014 Jan;59(1):60-6.
2. Bachmeyer C and Moreno-Sabater A. CMAJ. 2017 Jun 26;189(25):E865.
Biopsy for this patient revealed folliculitis with Demodex mites visualized on histology. Direct immunofluorescence was negative. A KOH preparation was performed and was positive for large numbers of Demodex. Bacterial cultures were negative. The patient was started on a course of submicrobial doxycycline and ivermectin and showed marked improvement 1 month following treatment.
Demodex folliculorum and Demodex brevis (collectively referred to as Demodex) are microscopic parasitic mites that commonly live on human skin.1 Typically, the mite remains asymptomatic. However, in higher numbers, the infestation may cause dermatoses, called demodicosis. Lesions often present as itchy papules, pustules, and erythematous scaling on the face, ears, and scalp. Blepharitis may be present. Demodex folliculitis is more common in immunocompromised patients.2
Demodex may have a causative role in rosacea and present similarly, with a key difference being that Demodex-type rosacea is more scaly/dry and pustular than common rosacea.1 In Demodex folliculitis, bacterial cultures are often negative. A skin scraping for KOH will reveal increased mite colonization. The Demodex mite may also be seen in histologic slides.
Treatment of Demodex folliculitis includes crotamiton cream, permethrin cream, oral tetracyclines, topical or systemic metronidazole, and topical or oral ivermectin.
This case and photos were submitted by Susannah McClain, MD, Three Rivers Dermatology, Pittsburgh.
References
1. Rather PA and Hassan I. Indian J Dermatol. 2014 Jan;59(1):60-6.
2. Bachmeyer C and Moreno-Sabater A. CMAJ. 2017 Jun 26;189(25):E865.
Biopsy for this patient revealed folliculitis with Demodex mites visualized on histology. Direct immunofluorescence was negative. A KOH preparation was performed and was positive for large numbers of Demodex. Bacterial cultures were negative. The patient was started on a course of submicrobial doxycycline and ivermectin and showed marked improvement 1 month following treatment.
Demodex folliculorum and Demodex brevis (collectively referred to as Demodex) are microscopic parasitic mites that commonly live on human skin.1 Typically, the mite remains asymptomatic. However, in higher numbers, the infestation may cause dermatoses, called demodicosis. Lesions often present as itchy papules, pustules, and erythematous scaling on the face, ears, and scalp. Blepharitis may be present. Demodex folliculitis is more common in immunocompromised patients.2
Demodex may have a causative role in rosacea and present similarly, with a key difference being that Demodex-type rosacea is more scaly/dry and pustular than common rosacea.1 In Demodex folliculitis, bacterial cultures are often negative. A skin scraping for KOH will reveal increased mite colonization. The Demodex mite may also be seen in histologic slides.
Treatment of Demodex folliculitis includes crotamiton cream, permethrin cream, oral tetracyclines, topical or systemic metronidazole, and topical or oral ivermectin.
This case and photos were submitted by Susannah McClain, MD, Three Rivers Dermatology, Pittsburgh.
References
1. Rather PA and Hassan I. Indian J Dermatol. 2014 Jan;59(1):60-6.
2. Bachmeyer C and Moreno-Sabater A. CMAJ. 2017 Jun 26;189(25):E865.
A woman with a history of diabetes, and plaques on both shins
. Women are often more affected than men. Patients often present in their 30s and 40s. The cause of NLD is unknown. Twenty percent of patients with NLD will have glucose intolerance or a family history of diabetes.1 The percentage of patients with NLD who have diabetes varies in reports from 11% to 65%.2 NLD may progress despite the diabetes treatment. Only 0.03% of patient with diabetes will have NLD.3
Lesions most commonly occur on the extremities, with shins being affected in most cases. They vary from asymptomatic to painful. Typically, lesions begin as small, firm erythematous papules that evolve into shiny, well-defined plaques. In older plaques, the center will often appear yellow, depressed, and atrophic, with telangiectasias. The periphery appears pink to violaceous to brown. Ulceration may be present, particularly after trauma, and there may be decreased sensation in the plaques. NLD is clinically distinct from diabetic dermopathy, which appear as brown macules, often in older patients with diabetes.
Ideally, biopsy should be taken at the edge of a lesion. Histologically, the epidermis appears normal or atrophic. A diffuse palisaded and interstitial granulomatous dermatitis consisting of histiocytes, multinucleated giant cells, lymphocytes, and plasma cells is seen in the dermis. Granulomas are often oriented parallel to the epidermis. There is no mucin at the center of the granulomas (as seen in granuloma annulare). Inflammation may extend into the subcutaneous fat. Asteroid bodies (as seen in sarcoid) are absent.
Unfortunately, treatment of NLD is often unsuccessful. Treatment includes potent topical corticosteroids for early lesions and intralesional triamcinolone to the leading edge of lesions. Care should be taken to avoid injecting centrally where atrophy and ulceration may result. Systemic steroids may be helpful in some cases, but can elevate glucose levels. Other reported medical treatments include pentoxifylline, cyclosporine, and niacinamide. Some lesions may spontaneously resolve. Ulcerations may require surgical excision with grafting.
This case and photo are provided by Dr. Bilu Martin, who is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
1. James WD et al. Andrews’ Diseases of the Skin: Clinical Dermatology. Philadelphia: Saunders Elsevier, 2006.
2. Hashemi D et al. JAMA Dermatol. 2019 Apr 1;155(4):455-9.
3. Bolognia JL et al. Dermatology. St. Louis, Mo.: Mosby Elsevier, 2008.
. Women are often more affected than men. Patients often present in their 30s and 40s. The cause of NLD is unknown. Twenty percent of patients with NLD will have glucose intolerance or a family history of diabetes.1 The percentage of patients with NLD who have diabetes varies in reports from 11% to 65%.2 NLD may progress despite the diabetes treatment. Only 0.03% of patient with diabetes will have NLD.3
Lesions most commonly occur on the extremities, with shins being affected in most cases. They vary from asymptomatic to painful. Typically, lesions begin as small, firm erythematous papules that evolve into shiny, well-defined plaques. In older plaques, the center will often appear yellow, depressed, and atrophic, with telangiectasias. The periphery appears pink to violaceous to brown. Ulceration may be present, particularly after trauma, and there may be decreased sensation in the plaques. NLD is clinically distinct from diabetic dermopathy, which appear as brown macules, often in older patients with diabetes.
Ideally, biopsy should be taken at the edge of a lesion. Histologically, the epidermis appears normal or atrophic. A diffuse palisaded and interstitial granulomatous dermatitis consisting of histiocytes, multinucleated giant cells, lymphocytes, and plasma cells is seen in the dermis. Granulomas are often oriented parallel to the epidermis. There is no mucin at the center of the granulomas (as seen in granuloma annulare). Inflammation may extend into the subcutaneous fat. Asteroid bodies (as seen in sarcoid) are absent.
Unfortunately, treatment of NLD is often unsuccessful. Treatment includes potent topical corticosteroids for early lesions and intralesional triamcinolone to the leading edge of lesions. Care should be taken to avoid injecting centrally where atrophy and ulceration may result. Systemic steroids may be helpful in some cases, but can elevate glucose levels. Other reported medical treatments include pentoxifylline, cyclosporine, and niacinamide. Some lesions may spontaneously resolve. Ulcerations may require surgical excision with grafting.
This case and photo are provided by Dr. Bilu Martin, who is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
1. James WD et al. Andrews’ Diseases of the Skin: Clinical Dermatology. Philadelphia: Saunders Elsevier, 2006.
2. Hashemi D et al. JAMA Dermatol. 2019 Apr 1;155(4):455-9.
3. Bolognia JL et al. Dermatology. St. Louis, Mo.: Mosby Elsevier, 2008.
. Women are often more affected than men. Patients often present in their 30s and 40s. The cause of NLD is unknown. Twenty percent of patients with NLD will have glucose intolerance or a family history of diabetes.1 The percentage of patients with NLD who have diabetes varies in reports from 11% to 65%.2 NLD may progress despite the diabetes treatment. Only 0.03% of patient with diabetes will have NLD.3
Lesions most commonly occur on the extremities, with shins being affected in most cases. They vary from asymptomatic to painful. Typically, lesions begin as small, firm erythematous papules that evolve into shiny, well-defined plaques. In older plaques, the center will often appear yellow, depressed, and atrophic, with telangiectasias. The periphery appears pink to violaceous to brown. Ulceration may be present, particularly after trauma, and there may be decreased sensation in the plaques. NLD is clinically distinct from diabetic dermopathy, which appear as brown macules, often in older patients with diabetes.
Ideally, biopsy should be taken at the edge of a lesion. Histologically, the epidermis appears normal or atrophic. A diffuse palisaded and interstitial granulomatous dermatitis consisting of histiocytes, multinucleated giant cells, lymphocytes, and plasma cells is seen in the dermis. Granulomas are often oriented parallel to the epidermis. There is no mucin at the center of the granulomas (as seen in granuloma annulare). Inflammation may extend into the subcutaneous fat. Asteroid bodies (as seen in sarcoid) are absent.
Unfortunately, treatment of NLD is often unsuccessful. Treatment includes potent topical corticosteroids for early lesions and intralesional triamcinolone to the leading edge of lesions. Care should be taken to avoid injecting centrally where atrophy and ulceration may result. Systemic steroids may be helpful in some cases, but can elevate glucose levels. Other reported medical treatments include pentoxifylline, cyclosporine, and niacinamide. Some lesions may spontaneously resolve. Ulcerations may require surgical excision with grafting.
This case and photo are provided by Dr. Bilu Martin, who is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
1. James WD et al. Andrews’ Diseases of the Skin: Clinical Dermatology. Philadelphia: Saunders Elsevier, 2006.
2. Hashemi D et al. JAMA Dermatol. 2019 Apr 1;155(4):455-9.
3. Bolognia JL et al. Dermatology. St. Louis, Mo.: Mosby Elsevier, 2008.
An 80-year-old patient presents with an asymptomatic firm pink plaque on his shoulder
Melanoma is a type of skin cancer that arises from melanocytes. According to the American Cancer Society, about 106,110 new melanomas will be diagnosed in the United States in 2021.The risk for developing melanoma increases with age. There are multiple clinical forms of cutaneous melanoma. The four main types are superficial spreading melanoma, nodular melanoma, melanoma in situ (lentigo maligna), and acral lentiginous melanoma. Rare variants include amelanotic melanoma, nevoid melanoma, spitzoid melanoma, and desmoplastic melanoma (DM). Melanoma can also rarely affect parts of the eye and mucosa.
, according to the Memorial Sloan Kettering Cancer Center. It typically presents as a subtle pigmented, pink, red, or skin colored patch, papule or plaque on sun-exposed skin (head and neck most frequently). Chronic UV exposure has been linked to DM. It may be mistaken for a scar or dermatofibroma. DM tends to grow locally and has less risk for nodal metastasis.1
Histologic diagnosis may be challenging. Two histologic variants in desmoplastic melanoma have been described: pure and mixed, depending on the degree of desmoplasia and cellularity present in the tumor.1 Pure DM tends to have a less aggressive course. Melanocytes can appear spindled in a fibrotic stroma. Patchy lymphocyte aggregates may be seen. Perineural invasion is more common in desmoplastic melanoma. Histologically, the differential includes spindle cell carcinoma and sarcoma. Immunostaining is helpful in differentiation.
Our patient had no lymphadenopathy on physical examination. Biopsy revealed a desmoplastic melanoma, 3.6 mm in depth, no ulceration, no regression, mitotic rate 1/mm2. He was referred to surgical oncology. The patient underwent wide excision. Sentinel lymph node biopsy was deferred.
It is imperative for dermatologists to be cognizant of this challenging subtype of melanoma when evaluating patients.
This case and photo were submitted by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
1. Chen L et al. J Am Acad Dermatol. 2013 May;68(5):825-33.
Melanoma is a type of skin cancer that arises from melanocytes. According to the American Cancer Society, about 106,110 new melanomas will be diagnosed in the United States in 2021.The risk for developing melanoma increases with age. There are multiple clinical forms of cutaneous melanoma. The four main types are superficial spreading melanoma, nodular melanoma, melanoma in situ (lentigo maligna), and acral lentiginous melanoma. Rare variants include amelanotic melanoma, nevoid melanoma, spitzoid melanoma, and desmoplastic melanoma (DM). Melanoma can also rarely affect parts of the eye and mucosa.
, according to the Memorial Sloan Kettering Cancer Center. It typically presents as a subtle pigmented, pink, red, or skin colored patch, papule or plaque on sun-exposed skin (head and neck most frequently). Chronic UV exposure has been linked to DM. It may be mistaken for a scar or dermatofibroma. DM tends to grow locally and has less risk for nodal metastasis.1
Histologic diagnosis may be challenging. Two histologic variants in desmoplastic melanoma have been described: pure and mixed, depending on the degree of desmoplasia and cellularity present in the tumor.1 Pure DM tends to have a less aggressive course. Melanocytes can appear spindled in a fibrotic stroma. Patchy lymphocyte aggregates may be seen. Perineural invasion is more common in desmoplastic melanoma. Histologically, the differential includes spindle cell carcinoma and sarcoma. Immunostaining is helpful in differentiation.
Our patient had no lymphadenopathy on physical examination. Biopsy revealed a desmoplastic melanoma, 3.6 mm in depth, no ulceration, no regression, mitotic rate 1/mm2. He was referred to surgical oncology. The patient underwent wide excision. Sentinel lymph node biopsy was deferred.
It is imperative for dermatologists to be cognizant of this challenging subtype of melanoma when evaluating patients.
This case and photo were submitted by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
1. Chen L et al. J Am Acad Dermatol. 2013 May;68(5):825-33.
Melanoma is a type of skin cancer that arises from melanocytes. According to the American Cancer Society, about 106,110 new melanomas will be diagnosed in the United States in 2021.The risk for developing melanoma increases with age. There are multiple clinical forms of cutaneous melanoma. The four main types are superficial spreading melanoma, nodular melanoma, melanoma in situ (lentigo maligna), and acral lentiginous melanoma. Rare variants include amelanotic melanoma, nevoid melanoma, spitzoid melanoma, and desmoplastic melanoma (DM). Melanoma can also rarely affect parts of the eye and mucosa.
, according to the Memorial Sloan Kettering Cancer Center. It typically presents as a subtle pigmented, pink, red, or skin colored patch, papule or plaque on sun-exposed skin (head and neck most frequently). Chronic UV exposure has been linked to DM. It may be mistaken for a scar or dermatofibroma. DM tends to grow locally and has less risk for nodal metastasis.1
Histologic diagnosis may be challenging. Two histologic variants in desmoplastic melanoma have been described: pure and mixed, depending on the degree of desmoplasia and cellularity present in the tumor.1 Pure DM tends to have a less aggressive course. Melanocytes can appear spindled in a fibrotic stroma. Patchy lymphocyte aggregates may be seen. Perineural invasion is more common in desmoplastic melanoma. Histologically, the differential includes spindle cell carcinoma and sarcoma. Immunostaining is helpful in differentiation.
Our patient had no lymphadenopathy on physical examination. Biopsy revealed a desmoplastic melanoma, 3.6 mm in depth, no ulceration, no regression, mitotic rate 1/mm2. He was referred to surgical oncology. The patient underwent wide excision. Sentinel lymph node biopsy was deferred.
It is imperative for dermatologists to be cognizant of this challenging subtype of melanoma when evaluating patients.
This case and photo were submitted by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
1. Chen L et al. J Am Acad Dermatol. 2013 May;68(5):825-33.
A 35-year-old male who takes antiseizure medications, has asymptomatic lesions on his nose and cheeks, present since birth
although up to 75% of cases may be caused by a spontaneous mutation. It is caused by mutations in the TSC1 gene on chromosome 9q34–encoding hamartin or the TSC2 gene on chromosome I6pl3–encoding tuberin. Patients present at birth and males and females are affected equally.
There are multiple skin findings in TS that may herald the diagnosis. The earliest findings are hypopigmented macules, found in 85% of patients. They may be in an ash-leaf shape or confetti pattern. Adenoma sebaceum, or angiofibromas, are present on the forehead, nose, and cheeks, and often present in childhood. Periungual angiofibromas called Koenen tumors tend to occur at puberty. Connective-tissue nevi called Shagreen plaques, or collagenomas, may be present, which is what our patient exhibits on his back. The lumbosacral region is the most common area for these to appear in the first decade of life.
TS can affect other organ systems in the body. Seizures, neuropsychiatric diseases, and mental deficiency are common. Cortical tumors, gliomas, and astrocytomas may develop in the brain. Congenital retinal hamartomas (phakomas) occur. Renal cysts and angiomyolipomas may occur in the kidneys. In the lungs, patients may develop lymphangiomyomatosis. Rhabdomyomas can occur in the heart in infancy and may regress spontaneously over time. Bony changes such as cysts and sclerosis may occur.
Treatment and monitoring of TS requires a multidisciplinary approach with neurology, pulmonology, cardiology, ophthalmology, orthopedics, and dermatology. Cosmetic treatment for angiofibromas includes CO2 laser, shaving, and dermabrasion. Topical rapamycin use has been described in the literature to improve the appearance of angiofibromas. Our patient has been using rapamycin 1% cream for more than 5 years and has had a substantial reduction in the size and number of angiofibromas.
This case and photo were submitted by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References:
Spitz J. Genodermatoses. A Clinical Guide to Genetic Skin Disorders. Philadelphia: Lippincott Williams & Wilkins, 2005.
James W et al. Andrews’ Diseases of the Skin. Philadelphia: Saunders, 2006.
Bolognia JL et al. Dermatology. London: Mosby Elsevier, 2008.
although up to 75% of cases may be caused by a spontaneous mutation. It is caused by mutations in the TSC1 gene on chromosome 9q34–encoding hamartin or the TSC2 gene on chromosome I6pl3–encoding tuberin. Patients present at birth and males and females are affected equally.
There are multiple skin findings in TS that may herald the diagnosis. The earliest findings are hypopigmented macules, found in 85% of patients. They may be in an ash-leaf shape or confetti pattern. Adenoma sebaceum, or angiofibromas, are present on the forehead, nose, and cheeks, and often present in childhood. Periungual angiofibromas called Koenen tumors tend to occur at puberty. Connective-tissue nevi called Shagreen plaques, or collagenomas, may be present, which is what our patient exhibits on his back. The lumbosacral region is the most common area for these to appear in the first decade of life.
TS can affect other organ systems in the body. Seizures, neuropsychiatric diseases, and mental deficiency are common. Cortical tumors, gliomas, and astrocytomas may develop in the brain. Congenital retinal hamartomas (phakomas) occur. Renal cysts and angiomyolipomas may occur in the kidneys. In the lungs, patients may develop lymphangiomyomatosis. Rhabdomyomas can occur in the heart in infancy and may regress spontaneously over time. Bony changes such as cysts and sclerosis may occur.
Treatment and monitoring of TS requires a multidisciplinary approach with neurology, pulmonology, cardiology, ophthalmology, orthopedics, and dermatology. Cosmetic treatment for angiofibromas includes CO2 laser, shaving, and dermabrasion. Topical rapamycin use has been described in the literature to improve the appearance of angiofibromas. Our patient has been using rapamycin 1% cream for more than 5 years and has had a substantial reduction in the size and number of angiofibromas.
This case and photo were submitted by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References:
Spitz J. Genodermatoses. A Clinical Guide to Genetic Skin Disorders. Philadelphia: Lippincott Williams & Wilkins, 2005.
James W et al. Andrews’ Diseases of the Skin. Philadelphia: Saunders, 2006.
Bolognia JL et al. Dermatology. London: Mosby Elsevier, 2008.
although up to 75% of cases may be caused by a spontaneous mutation. It is caused by mutations in the TSC1 gene on chromosome 9q34–encoding hamartin or the TSC2 gene on chromosome I6pl3–encoding tuberin. Patients present at birth and males and females are affected equally.
There are multiple skin findings in TS that may herald the diagnosis. The earliest findings are hypopigmented macules, found in 85% of patients. They may be in an ash-leaf shape or confetti pattern. Adenoma sebaceum, or angiofibromas, are present on the forehead, nose, and cheeks, and often present in childhood. Periungual angiofibromas called Koenen tumors tend to occur at puberty. Connective-tissue nevi called Shagreen plaques, or collagenomas, may be present, which is what our patient exhibits on his back. The lumbosacral region is the most common area for these to appear in the first decade of life.
TS can affect other organ systems in the body. Seizures, neuropsychiatric diseases, and mental deficiency are common. Cortical tumors, gliomas, and astrocytomas may develop in the brain. Congenital retinal hamartomas (phakomas) occur. Renal cysts and angiomyolipomas may occur in the kidneys. In the lungs, patients may develop lymphangiomyomatosis. Rhabdomyomas can occur in the heart in infancy and may regress spontaneously over time. Bony changes such as cysts and sclerosis may occur.
Treatment and monitoring of TS requires a multidisciplinary approach with neurology, pulmonology, cardiology, ophthalmology, orthopedics, and dermatology. Cosmetic treatment for angiofibromas includes CO2 laser, shaving, and dermabrasion. Topical rapamycin use has been described in the literature to improve the appearance of angiofibromas. Our patient has been using rapamycin 1% cream for more than 5 years and has had a substantial reduction in the size and number of angiofibromas.
This case and photo were submitted by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References:
Spitz J. Genodermatoses. A Clinical Guide to Genetic Skin Disorders. Philadelphia: Lippincott Williams & Wilkins, 2005.
James W et al. Andrews’ Diseases of the Skin. Philadelphia: Saunders, 2006.
Bolognia JL et al. Dermatology. London: Mosby Elsevier, 2008.
A 67-year-old White woman presented with 2 weeks of bullae on her lower feet
Bullous arthropod assault
Insect-bite reactions are commonly seen in dermatology practice. Most often, they present as pruritic papules. Vesicles and bullae can be seen as well but are less common. Flea bites are the most likely to cause blisters.1 Lesions may be grouped or in a linear pattern. Children tend to have more severe reactions than adults. Body temperature and odor may make some people more susceptible than others to bites. Of note, patients with chronic lymphocytic leukemia tend to have more severe, bullous reactions.2 The differential diagnosis includes bullous pemphigoid, bullous impetigo, bullous tinea, bullous fixed drug, and bullous diabeticorum.
In general, bullous arthropod reactions begin as intraepidermal vesicles that can progress to subepidermal blisters. Eosinophils can be present. Flame figures are often seen in patients with chronic lymphocytic leukemia.3 Histopathology in this patient revealed a subepidermal vesicular dermatitis with minimal inflammation. Periodic acid–Schiff (PAS) stain was negative. Direct immunofluorescence was negative for IgG, C3, IgA, IgM, and fibrinogen. Of note, systemic steroids may alter histologic and immunologic findings.
Bullous pemphigoid is an autoimmune blistering disorder where patients develop widespread tense bullae. Histopathology revealed a subepidermal blister with numerous eosinophils. Direct immunofluorescence study of perilesional skin showed linear IgG and C3 deposits at the basal membrane level. Systemic steroids, tetracyclines, and immunosuppressive medications are a mainstay of treatment. In bullous impetigo, the toxin of Staphylococcus aureus causes blister formation. It is treated with antistaphylococcal antibiotics. Bullous tinea reveals hyphae with PAS staining. Topical or systemic antifungals are used for treatment.
In severe cases, systemic steroids can be used as well. Bacterial culture was negative in this patient. The patient was treated with 1 week of oral prednisone prior to biopsy and topical betamethasone ointment. Her lesions subsequently resolved with no recurrence.
This case and photo were submitted by Brooke Resh Sateesh, MD, San Diego Family Dermatology.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
1-3. “Dermatology” 2nd ed. (Maryland Heights, Mo.: Mosby, 2008).
Bullous arthropod assault
Insect-bite reactions are commonly seen in dermatology practice. Most often, they present as pruritic papules. Vesicles and bullae can be seen as well but are less common. Flea bites are the most likely to cause blisters.1 Lesions may be grouped or in a linear pattern. Children tend to have more severe reactions than adults. Body temperature and odor may make some people more susceptible than others to bites. Of note, patients with chronic lymphocytic leukemia tend to have more severe, bullous reactions.2 The differential diagnosis includes bullous pemphigoid, bullous impetigo, bullous tinea, bullous fixed drug, and bullous diabeticorum.
In general, bullous arthropod reactions begin as intraepidermal vesicles that can progress to subepidermal blisters. Eosinophils can be present. Flame figures are often seen in patients with chronic lymphocytic leukemia.3 Histopathology in this patient revealed a subepidermal vesicular dermatitis with minimal inflammation. Periodic acid–Schiff (PAS) stain was negative. Direct immunofluorescence was negative for IgG, C3, IgA, IgM, and fibrinogen. Of note, systemic steroids may alter histologic and immunologic findings.
Bullous pemphigoid is an autoimmune blistering disorder where patients develop widespread tense bullae. Histopathology revealed a subepidermal blister with numerous eosinophils. Direct immunofluorescence study of perilesional skin showed linear IgG and C3 deposits at the basal membrane level. Systemic steroids, tetracyclines, and immunosuppressive medications are a mainstay of treatment. In bullous impetigo, the toxin of Staphylococcus aureus causes blister formation. It is treated with antistaphylococcal antibiotics. Bullous tinea reveals hyphae with PAS staining. Topical or systemic antifungals are used for treatment.
In severe cases, systemic steroids can be used as well. Bacterial culture was negative in this patient. The patient was treated with 1 week of oral prednisone prior to biopsy and topical betamethasone ointment. Her lesions subsequently resolved with no recurrence.
This case and photo were submitted by Brooke Resh Sateesh, MD, San Diego Family Dermatology.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
1-3. “Dermatology” 2nd ed. (Maryland Heights, Mo.: Mosby, 2008).
Bullous arthropod assault
Insect-bite reactions are commonly seen in dermatology practice. Most often, they present as pruritic papules. Vesicles and bullae can be seen as well but are less common. Flea bites are the most likely to cause blisters.1 Lesions may be grouped or in a linear pattern. Children tend to have more severe reactions than adults. Body temperature and odor may make some people more susceptible than others to bites. Of note, patients with chronic lymphocytic leukemia tend to have more severe, bullous reactions.2 The differential diagnosis includes bullous pemphigoid, bullous impetigo, bullous tinea, bullous fixed drug, and bullous diabeticorum.
In general, bullous arthropod reactions begin as intraepidermal vesicles that can progress to subepidermal blisters. Eosinophils can be present. Flame figures are often seen in patients with chronic lymphocytic leukemia.3 Histopathology in this patient revealed a subepidermal vesicular dermatitis with minimal inflammation. Periodic acid–Schiff (PAS) stain was negative. Direct immunofluorescence was negative for IgG, C3, IgA, IgM, and fibrinogen. Of note, systemic steroids may alter histologic and immunologic findings.
Bullous pemphigoid is an autoimmune blistering disorder where patients develop widespread tense bullae. Histopathology revealed a subepidermal blister with numerous eosinophils. Direct immunofluorescence study of perilesional skin showed linear IgG and C3 deposits at the basal membrane level. Systemic steroids, tetracyclines, and immunosuppressive medications are a mainstay of treatment. In bullous impetigo, the toxin of Staphylococcus aureus causes blister formation. It is treated with antistaphylococcal antibiotics. Bullous tinea reveals hyphae with PAS staining. Topical or systemic antifungals are used for treatment.
In severe cases, systemic steroids can be used as well. Bacterial culture was negative in this patient. The patient was treated with 1 week of oral prednisone prior to biopsy and topical betamethasone ointment. Her lesions subsequently resolved with no recurrence.
This case and photo were submitted by Brooke Resh Sateesh, MD, San Diego Family Dermatology.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
References
1-3. “Dermatology” 2nd ed. (Maryland Heights, Mo.: Mosby, 2008).
A girl presents with blotchy, slightly itchy spots on her chest, back
On close evaluation of the picture on her chest, she has pale macules and patches surrounded by erythematous ill-defined patches consistent with nevus anemicus. The findings of the picture raise the suspicion for neurofibromatosis, and it was recommended for her to be evaluated in person.
She comes several days later to the clinic. The caretaker, who is her aunt, reports she does not know much of the girl’s medical history as she recently moved from South America to live with her. The girl is a very nice and pleasant 8-year-old. She reports noticing the spots on her chest for about a year and that they seem to get a little itchier and more noticeable when she is hot or when she is running. She also reports increasing headaches for several months. She is being home schooled, and according to her aunt she is at par with her cousins who are about the same age. There is no history of seizures. She has had back surgery in the past. There is no history of hypertension. There is no family history of any genetic disorder or similar lesions.
On physical exam, her vital signs are normal, but her head circumference is over the 90th percentile. She is pleasant and interactive. On skin examination, she has slightly noticeable pale macules and patches on the chest and back that become more apparent after rubbing her skin. She has multiple light brown macules and oval patches on the chest, back, and neck. She has no axillary or inguinal freckling. She has scars on the back from her prior surgery.
As she was having worsening headaches, an MRI of the brain was ordered, which showed a left optic glioma. She was then referred to ophthalmology, neurology, and genetics.
Neurofibromatosis type 1 (NF1) is a common genetic autosomal dominant disorder cause by mutations on the NF1 gene on chromosome 17, which encodes for the protein neurofibromin. This protein works in the Ras-mitogen–activated protein kinase pathway as a negative regulator. Based on the National Institute of Health criteria, children need two or more of the following to be diagnosed with NF1: more than six café au lait macules larger than 5 mm in prepubescent children and 2.5 cm after puberty; axillary or inguinal freckling; two or more Lisch nodules; optic gliomas; two or more neurofibromas or one plexiform neurofibroma; or a first degree relative with a diagnosis of NF1. With these criteria, about 70% of the children can be diagnosed before the age of 1 year.1
Nevus anemicus is an uncommon birthmark, sometimes overlooked, that is characterized by pale, hypopigmented, well-defined macules and patches that do not turn red after trauma or changes in temperature. Nevus anemicus is usually localized on the torso but can be seen on the face, neck, and extremities. These lesions are present in 1%-2% of the general population. They are thought to occur because of increased sensitivity of the affected blood vessels to catecholamines, which causes permanent vasoconstriction, which leads to hypopigmentation on the area.2 These lesions are usually present at birth and have been described in patients with tuberous sclerosis, neurofibromatosis, and phakomatosis pigmentovascularis.
Recent studies of patients with neurofibromatosis and other RASopathies have noticed that nevus anemicus is present in about 8.8%-51% of the patients studied with a diagnosis NF1, compared with only 2% of the controls.3,4 The studies failed to report any cases of nevus anemicus in patients with other RASopathies associated with café au lait macules. Bulteel and colleagues recently reported two cases of non-NF1 RASopathies also associated with nevus anemicus in a patient with Legius syndrome and a patient with Noonan syndrome with multiple lentigines.5 The nevus anemicus was reported to occur most commonly on the anterior chest and be multiple, as seen in our patient.
The authors of the published studies advocate for the introduction of nevus anemicus as part of the diagnostic criteria for NF1, especially because it can be an early finding seen in babies, which can aid in early diagnosis of NF1.
Dr. Matiz is a pediatric dermatologist at Southern California Permanente Medical Group, San Diego. She has no relevant financial disclosures. Email Dr. Matiz at [email protected].
References
1. Pediatrics. 2000 Mar. doi: 10.1542/peds.105.3.608.
2. Nevus Anemicus. StatPearls [Internet] (Treasure Island, Fla.: StatPearls Publishing; 2020 Jan).
3. J Am Acad Dermatol. 2013 Nov. doi: 10.1016/j.jaad.2013.06.039.
4. Pediatr Dermatol. 2015 May-Jun. doi: 10.1111/pde.12525.
5. JAAD Case Rep. 2018 Apr 5. doi: 10.1016/j.jdcr.2017.09.037.
On close evaluation of the picture on her chest, she has pale macules and patches surrounded by erythematous ill-defined patches consistent with nevus anemicus. The findings of the picture raise the suspicion for neurofibromatosis, and it was recommended for her to be evaluated in person.
She comes several days later to the clinic. The caretaker, who is her aunt, reports she does not know much of the girl’s medical history as she recently moved from South America to live with her. The girl is a very nice and pleasant 8-year-old. She reports noticing the spots on her chest for about a year and that they seem to get a little itchier and more noticeable when she is hot or when she is running. She also reports increasing headaches for several months. She is being home schooled, and according to her aunt she is at par with her cousins who are about the same age. There is no history of seizures. She has had back surgery in the past. There is no history of hypertension. There is no family history of any genetic disorder or similar lesions.
On physical exam, her vital signs are normal, but her head circumference is over the 90th percentile. She is pleasant and interactive. On skin examination, she has slightly noticeable pale macules and patches on the chest and back that become more apparent after rubbing her skin. She has multiple light brown macules and oval patches on the chest, back, and neck. She has no axillary or inguinal freckling. She has scars on the back from her prior surgery.
As she was having worsening headaches, an MRI of the brain was ordered, which showed a left optic glioma. She was then referred to ophthalmology, neurology, and genetics.
Neurofibromatosis type 1 (NF1) is a common genetic autosomal dominant disorder cause by mutations on the NF1 gene on chromosome 17, which encodes for the protein neurofibromin. This protein works in the Ras-mitogen–activated protein kinase pathway as a negative regulator. Based on the National Institute of Health criteria, children need two or more of the following to be diagnosed with NF1: more than six café au lait macules larger than 5 mm in prepubescent children and 2.5 cm after puberty; axillary or inguinal freckling; two or more Lisch nodules; optic gliomas; two or more neurofibromas or one plexiform neurofibroma; or a first degree relative with a diagnosis of NF1. With these criteria, about 70% of the children can be diagnosed before the age of 1 year.1
Nevus anemicus is an uncommon birthmark, sometimes overlooked, that is characterized by pale, hypopigmented, well-defined macules and patches that do not turn red after trauma or changes in temperature. Nevus anemicus is usually localized on the torso but can be seen on the face, neck, and extremities. These lesions are present in 1%-2% of the general population. They are thought to occur because of increased sensitivity of the affected blood vessels to catecholamines, which causes permanent vasoconstriction, which leads to hypopigmentation on the area.2 These lesions are usually present at birth and have been described in patients with tuberous sclerosis, neurofibromatosis, and phakomatosis pigmentovascularis.
Recent studies of patients with neurofibromatosis and other RASopathies have noticed that nevus anemicus is present in about 8.8%-51% of the patients studied with a diagnosis NF1, compared with only 2% of the controls.3,4 The studies failed to report any cases of nevus anemicus in patients with other RASopathies associated with café au lait macules. Bulteel and colleagues recently reported two cases of non-NF1 RASopathies also associated with nevus anemicus in a patient with Legius syndrome and a patient with Noonan syndrome with multiple lentigines.5 The nevus anemicus was reported to occur most commonly on the anterior chest and be multiple, as seen in our patient.
The authors of the published studies advocate for the introduction of nevus anemicus as part of the diagnostic criteria for NF1, especially because it can be an early finding seen in babies, which can aid in early diagnosis of NF1.
Dr. Matiz is a pediatric dermatologist at Southern California Permanente Medical Group, San Diego. She has no relevant financial disclosures. Email Dr. Matiz at [email protected].
References
1. Pediatrics. 2000 Mar. doi: 10.1542/peds.105.3.608.
2. Nevus Anemicus. StatPearls [Internet] (Treasure Island, Fla.: StatPearls Publishing; 2020 Jan).
3. J Am Acad Dermatol. 2013 Nov. doi: 10.1016/j.jaad.2013.06.039.
4. Pediatr Dermatol. 2015 May-Jun. doi: 10.1111/pde.12525.
5. JAAD Case Rep. 2018 Apr 5. doi: 10.1016/j.jdcr.2017.09.037.
On close evaluation of the picture on her chest, she has pale macules and patches surrounded by erythematous ill-defined patches consistent with nevus anemicus. The findings of the picture raise the suspicion for neurofibromatosis, and it was recommended for her to be evaluated in person.
She comes several days later to the clinic. The caretaker, who is her aunt, reports she does not know much of the girl’s medical history as she recently moved from South America to live with her. The girl is a very nice and pleasant 8-year-old. She reports noticing the spots on her chest for about a year and that they seem to get a little itchier and more noticeable when she is hot or when she is running. She also reports increasing headaches for several months. She is being home schooled, and according to her aunt she is at par with her cousins who are about the same age. There is no history of seizures. She has had back surgery in the past. There is no history of hypertension. There is no family history of any genetic disorder or similar lesions.
On physical exam, her vital signs are normal, but her head circumference is over the 90th percentile. She is pleasant and interactive. On skin examination, she has slightly noticeable pale macules and patches on the chest and back that become more apparent after rubbing her skin. She has multiple light brown macules and oval patches on the chest, back, and neck. She has no axillary or inguinal freckling. She has scars on the back from her prior surgery.
As she was having worsening headaches, an MRI of the brain was ordered, which showed a left optic glioma. She was then referred to ophthalmology, neurology, and genetics.
Neurofibromatosis type 1 (NF1) is a common genetic autosomal dominant disorder cause by mutations on the NF1 gene on chromosome 17, which encodes for the protein neurofibromin. This protein works in the Ras-mitogen–activated protein kinase pathway as a negative regulator. Based on the National Institute of Health criteria, children need two or more of the following to be diagnosed with NF1: more than six café au lait macules larger than 5 mm in prepubescent children and 2.5 cm after puberty; axillary or inguinal freckling; two or more Lisch nodules; optic gliomas; two or more neurofibromas or one plexiform neurofibroma; or a first degree relative with a diagnosis of NF1. With these criteria, about 70% of the children can be diagnosed before the age of 1 year.1
Nevus anemicus is an uncommon birthmark, sometimes overlooked, that is characterized by pale, hypopigmented, well-defined macules and patches that do not turn red after trauma or changes in temperature. Nevus anemicus is usually localized on the torso but can be seen on the face, neck, and extremities. These lesions are present in 1%-2% of the general population. They are thought to occur because of increased sensitivity of the affected blood vessels to catecholamines, which causes permanent vasoconstriction, which leads to hypopigmentation on the area.2 These lesions are usually present at birth and have been described in patients with tuberous sclerosis, neurofibromatosis, and phakomatosis pigmentovascularis.
Recent studies of patients with neurofibromatosis and other RASopathies have noticed that nevus anemicus is present in about 8.8%-51% of the patients studied with a diagnosis NF1, compared with only 2% of the controls.3,4 The studies failed to report any cases of nevus anemicus in patients with other RASopathies associated with café au lait macules. Bulteel and colleagues recently reported two cases of non-NF1 RASopathies also associated with nevus anemicus in a patient with Legius syndrome and a patient with Noonan syndrome with multiple lentigines.5 The nevus anemicus was reported to occur most commonly on the anterior chest and be multiple, as seen in our patient.
The authors of the published studies advocate for the introduction of nevus anemicus as part of the diagnostic criteria for NF1, especially because it can be an early finding seen in babies, which can aid in early diagnosis of NF1.
Dr. Matiz is a pediatric dermatologist at Southern California Permanente Medical Group, San Diego. She has no relevant financial disclosures. Email Dr. Matiz at [email protected].
References
1. Pediatrics. 2000 Mar. doi: 10.1542/peds.105.3.608.
2. Nevus Anemicus. StatPearls [Internet] (Treasure Island, Fla.: StatPearls Publishing; 2020 Jan).
3. J Am Acad Dermatol. 2013 Nov. doi: 10.1016/j.jaad.2013.06.039.
4. Pediatr Dermatol. 2015 May-Jun. doi: 10.1111/pde.12525.
5. JAAD Case Rep. 2018 Apr 5. doi: 10.1016/j.jdcr.2017.09.037.
A 70-year-old presented with a 3-week history of asymptomatic violaceous papules on his feet
and named the condition multiple benign pigmented hemorrhagic sarcoma. The disease emerged again at the onset of the AIDS epidemic among homosexual men. There are five variants: HIV/AIDS–related KS, classic KS, African cutaneous KS, African lymphadenopathic KS, and immunosuppression-associated KS (from immunosuppressive therapy or malignancies such as lymphoma).
KS is caused by human herpes virus type 8 (HHV-8). Patients with KS have an increased risk of developing other malignancies such as lymphomas, leukemia, and myeloma. This patient exhibited classic KS.
The various forms of KS may appear different clinically. The lesions may appear as erythematous macules, small violaceous papules, large plaques, or ulcerated nodules. In classic KS, violaceous to bluish-black macules evolve to papules or plaques. Lesions are generally asymptomatic. The most common locations are the toes and soles, although other areas may be affected. Any mucocutaneous surface can be involved. The most common areas of internal involvement are the gastrointestinal system and lymphatics.
Histology reveals angular vessels lined by atypical cells. An associated inflammatory infiltrate containing plasma cells may be present in the upper dermis and perivascular areas. Nodules and plaques reveal a spindle cell neoplasm pattern. Lesions will stain positive for HHV-8.
In patients with HIV/AIDS–related KS, highly active antiretroviral therapy is the most important and beneficial treatment. Since the introduction of HAART, the incidence of KS has greatly decreased. However, there are a proportion of HIV/AIDS–associated Kaposi’s sarcoma patients with well-controlled HIV and undetectable viral loads who require further treatment.
Lesions may spontaneously resolve on their own. Other treatment methods include: cryotherapy, topical alitretinoin (9-cis-retinoic acid), intralesional interferon-alpha or vinblastine, superficial radiotherapy, liposomal doxorubicin, daunorubicin or paclitaxel. Small lesions that are asymptomatic may be monitored.
This patient had no internal involvement and responded well to cryotherapy.
This case and photo were provided by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
and named the condition multiple benign pigmented hemorrhagic sarcoma. The disease emerged again at the onset of the AIDS epidemic among homosexual men. There are five variants: HIV/AIDS–related KS, classic KS, African cutaneous KS, African lymphadenopathic KS, and immunosuppression-associated KS (from immunosuppressive therapy or malignancies such as lymphoma).
KS is caused by human herpes virus type 8 (HHV-8). Patients with KS have an increased risk of developing other malignancies such as lymphomas, leukemia, and myeloma. This patient exhibited classic KS.
The various forms of KS may appear different clinically. The lesions may appear as erythematous macules, small violaceous papules, large plaques, or ulcerated nodules. In classic KS, violaceous to bluish-black macules evolve to papules or plaques. Lesions are generally asymptomatic. The most common locations are the toes and soles, although other areas may be affected. Any mucocutaneous surface can be involved. The most common areas of internal involvement are the gastrointestinal system and lymphatics.
Histology reveals angular vessels lined by atypical cells. An associated inflammatory infiltrate containing plasma cells may be present in the upper dermis and perivascular areas. Nodules and plaques reveal a spindle cell neoplasm pattern. Lesions will stain positive for HHV-8.
In patients with HIV/AIDS–related KS, highly active antiretroviral therapy is the most important and beneficial treatment. Since the introduction of HAART, the incidence of KS has greatly decreased. However, there are a proportion of HIV/AIDS–associated Kaposi’s sarcoma patients with well-controlled HIV and undetectable viral loads who require further treatment.
Lesions may spontaneously resolve on their own. Other treatment methods include: cryotherapy, topical alitretinoin (9-cis-retinoic acid), intralesional interferon-alpha or vinblastine, superficial radiotherapy, liposomal doxorubicin, daunorubicin or paclitaxel. Small lesions that are asymptomatic may be monitored.
This patient had no internal involvement and responded well to cryotherapy.
This case and photo were provided by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
and named the condition multiple benign pigmented hemorrhagic sarcoma. The disease emerged again at the onset of the AIDS epidemic among homosexual men. There are five variants: HIV/AIDS–related KS, classic KS, African cutaneous KS, African lymphadenopathic KS, and immunosuppression-associated KS (from immunosuppressive therapy or malignancies such as lymphoma).
KS is caused by human herpes virus type 8 (HHV-8). Patients with KS have an increased risk of developing other malignancies such as lymphomas, leukemia, and myeloma. This patient exhibited classic KS.
The various forms of KS may appear different clinically. The lesions may appear as erythematous macules, small violaceous papules, large plaques, or ulcerated nodules. In classic KS, violaceous to bluish-black macules evolve to papules or plaques. Lesions are generally asymptomatic. The most common locations are the toes and soles, although other areas may be affected. Any mucocutaneous surface can be involved. The most common areas of internal involvement are the gastrointestinal system and lymphatics.
Histology reveals angular vessels lined by atypical cells. An associated inflammatory infiltrate containing plasma cells may be present in the upper dermis and perivascular areas. Nodules and plaques reveal a spindle cell neoplasm pattern. Lesions will stain positive for HHV-8.
In patients with HIV/AIDS–related KS, highly active antiretroviral therapy is the most important and beneficial treatment. Since the introduction of HAART, the incidence of KS has greatly decreased. However, there are a proportion of HIV/AIDS–associated Kaposi’s sarcoma patients with well-controlled HIV and undetectable viral loads who require further treatment.
Lesions may spontaneously resolve on their own. Other treatment methods include: cryotherapy, topical alitretinoin (9-cis-retinoic acid), intralesional interferon-alpha or vinblastine, superficial radiotherapy, liposomal doxorubicin, daunorubicin or paclitaxel. Small lesions that are asymptomatic may be monitored.
This patient had no internal involvement and responded well to cryotherapy.
This case and photo were provided by Dr. Bilu Martin.
Dr. Bilu Martin is a board-certified dermatologist in private practice at Premier Dermatology, MD, in Aventura, Fla. More diagnostic cases are available at mdedge.com/dermatology. To submit a case for possible publication, send an email to [email protected].
