Dermatology Online Journal

The world's oldest online peer-reviewed journal serving the dermatology community since 1995 © University of California, Davis

[Dermatology Online Journal @Derm_Journal]

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https://t.co/ZDc68PagyI

[Dermatology Online Journal @Derm_Journal]

Can you guess the diagnosis?
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An 8-year-old girl presented with asymptomatic sclerotic flesh-yellowish colored papules and nodules in a linear distribution over her right popliteal space, not following a specific dermatome.
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[Dermatology Online Journal @Derm_Journal]

H&E stain showed a normal epidermis, increased thick collagen bundles in the dermis, and dermal thickening. Trichrome stain showed haphazardly arranged thick collagen bundles in the dermis and orcein stain showed dense collagen fibers with diminished elastic fibers.

[Dermatology Online Journal @Derm_Journal]

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#medicine #dermatology #dermatologist #dermresident #dermtwitter #medtwitter #skindisease #rash #diagnosis #diagnosisoftheday #medicaleducation #clinicaldermatology #dermpath #dermjournal #dermatologyonlinejournal

[Dermatology Online Journal @Derm_Journal]

Can you guess the diagnosis?
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A 45-year-old woman presented with a four-month history of a painful, bleeding chin nodule previously treated with warm compresses, antibiotics, and incision and drainage.

[Dermatology Online Journal @Derm_Journal]

Histopathology demonstrated an epithelial neoplasm in the dermis, formed by nests of clear cells with prominent vasculature in the stroma.

[Dermatology Online Journal @Derm_Journal]

Of note, the patient had a history of RCC that was treated 7 years prior with a nephrectomy and inferior vena cava thrombectomy with no evidence of recurrence.

[Dermatology Online Journal @Derm_Journal]

Can you guess the diagnosis?
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A 45-year-old woman presented with a four-month history of a painful, bleeding chin nodule previously treated with warm compresses, antibiotics, and incision and drainage. Because this nodule continued to grow, she presented to dermatology.

[Dermatology Online Journal @Derm_Journal]

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https://t.co/fyeNLRBUvu

#dermtwitter #dermatology #medicine #dermatologist #dermresident #medicalstudent #skindisease #rash #diagnosisoftheday #medicaleducation #clinicaldermatology #dermpath #dermjournal #dermatologyonlinejournal

[Dermatology Online Journal @Derm_Journal]

Can you guess the diagnosis?
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A 38-year-old woman presented with a 5-year history of multiple small, asymptomatic, follicular, skin-colored papules over the face, particularly in the periorbital region and the upper cutaneous lip.

[Dermatology Online Journal @Derm_Journal]

Histopathology of an upper lip lesion showed an irregular proliferation of basaloid cells in anastomosing strands and cords with peripheral palisading and cysts with trichilemmal keratinization. Immunohistochemistry was positive for BerEP4.

[Dermatology Online Journal @Derm_Journal]

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#medicine #dermatology #dermatologist #dermresident #medicalstudent #skindisease #rash #diagnosis #diagnosisoftheday #medicaleducation #clinicaldermatology #dermpath #dermjournal #dermatologyonlinejournal

[Dermatology Online Journal @Derm_Journal]

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A 60-year-old man presented for evaluation of a recurrent asymptomatic rash consisting of variably-sized, arcuate-to-annular, erythematous papules and small plaques of the upper back, as shown in the image.

[Dermatology Online Journal @Derm_Journal]

Biopsy was notable for a dense infiltrate consisting of monomorphic lymphocytes oriented around superficial and deep vascular and adnexal structures. Epidermal change, plasma cells, and dermal mucin were absent. IHC confirmed the presence of a predominantly T cell population.