Dermatopathology

Case Reports

Granulomatous Dermatitis in a Patient With Cholangiocarcinoma Treated With BRAF and MEK Inhibitors

Author:

Jordan L. Bormann, MD

Amy M. Kerkvliet, MD

Granulomatous dermatitis (GD) has been described as a rare side effect of MEK and BRAF inhibitor use in the treatment of BRAF V600E mutation–...

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Dermpath Diagnosis

Pruritic Papules in the Perianal and Gluteal Cleft Regions

Author:

Ulysses Cázares, MAS

Ashley Elsensohn, MD

Michael Lee, MD

A 66-year-old man presented to the dermatology clinic with pruritus of the gluteal cleft and perianal region of several months’ duration. A shave...

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Photo Challenge

Disseminated Papules and Nodules on the Skin and Oral Mucosa in an Infant

Author:

Samantha K. Ong, MD

Elaine Siegfried, MD

Ramona Behshad, MD

A 38-week-old infant boy presented at birth with disseminated, nonblanching, purple to dark red papules and nodules on the skin and oral mucosa....

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Case Letter

Cystic Presentation of High-Grade Ductal Carcinoma In Situ in an Inframammary Accessory Nipple

Author:

Cynthia Lee, MS

Amin A. Hedayat, MD

H.L. Greenberg, MD

Accessory breasts (also referred to as ectopic breast tissue) develop when breast tissue is retained along the mammary ridge outside of the usual...

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Dermpath Diagnosis

Enlarging Pigmented Lesion on the Thigh

Author:

Meaghan C. Dougher, MD

Thomas Helm, MD

Matthew F. Helm, MD

An 80-year-old man presented with a pigmented lesion on the left lateral thigh near the knee that had been gradually enlarging over several weeks...

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Photo Challenge

Multiple Nodules on the Scrotum

Author:

Noah Hewitt, MD

William Farmer, MD

Zachary Zinn, MD

A 33-year-old man presented with progressively enlarging bumps on the scrotum that were present since adolescence. The lesions were asymptomatic...

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Photo Challenge

Porcelain White, Crinkled, Violaceous Patches on the Inner Thighs

Author:

Hasret Gündüz, MD

Bengü Nisa Akay, MD

Mehmet Fatih Atak, MD

Aylin Okçu Heper, MD

Banu Farabi, MD

A 50-year-old woman presented with multiple pruritic lesions on the right inner thigh of 2 years’ duration. Physical examination revealed...

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Dermpath Diagnosis

Painful, Nonhealing, Violaceus Plaque on the Right Breast

Author:

Patrick McMullan, PhD

Lorin A. Bibb, MD

Katalin Ferenczi, MD

A 42-year-old woman with a medical history of hypertension and smoking tobacco (5 pack years) presented with a painful, nonhealing, violaceous,...

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Photo Challenge

Ulcerated Nodule on the Lip

Author:

Georgeanne Cornell, DO

Wei Su, MD

John Moesch, DO

A 79-year-old man with a medical history of type 2 diabetes mellitus, hypothyroidism, and atrial fibrillation presented with an enlarging lesion...

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Photo Challenge

White Spots on the Extremities

Author:

Faraz Yousefian, DO

Amit Sharma, DO

A 52-year-old Black woman presented with self-described whitened spots on the arms and legs of 2 years’ duration. She experienced no improvement...

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Photo Challenge

Erythematous Dermal Facial Plaques in a Neutropenic Patient

Author:

Erica J. Mark, MD

Corina A. Rusu, MD

Seth M. Martin, MD

Sarah Gradecki, MD

R. Hal Flowers, MD

A 50-year-old woman undergoing cytarabine induction therapy for acute myeloid leukemia developed tender, erythematous, dermal plaques on the nasal...

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