Dermatopathology

Dermpath Diagnosis

Firm Exophytic Tumor on the Shin

Author:

Louisa Liu, MD

Abdul Hafeez Diwan, MD, PhD

Vicky Ren, MD

A 62-year-old man presented with a firm, exophytic, 2.8×1.5-cm tumor on the left shin of 6 to 7 years’ duration. An excisional biopsy was obtained...

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Photo Challenge

Pigmented Papules on the Face, Neck, and Chest

Author:

Apoorva Sharma, MBBS

Kiruthika Subburaja, MD

Muthu Sendhil Kumaran, MD, DNB, MNAMS

Debajyoti Chatterjee, MD, DM

A 46-year-old woman presented with multiple asymptomatic, flesh-colored, hyperpigmented papules on the face of 5 to 6 months’ duration that were...

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Photo Challenge

Solitary Pink Plaque on the Neck

Author:

Connor D. Burke, MD

Jane Scribner, MD

William J. Cook, MD

Joni Mazza-McCrann, MD

A 17-year-old adolescent girl presented with a solitary, 8-cm, pink plaque on the anterior aspect of the neck of 5 years’ duration. The rash was...

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Photo Challenge

Multiple Fingerlike Projections on the Leg

Author:

Debra K. Lee, BSA

Dylan Maldonado, MD

Michelle Tarbox, MD

A 61-year-old man presented with painful skin growths on the right pretibial region of several months’ duration. The patient reported pain due to...

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Case Letter

Focal Palmoplantar Keratoderma and Gingival Keratosis Caused by a KRT16 Mutation

Author:

Theodore D. Zaki, MD

Lynn M. Boyden, PhD

Erin Mathes, MD

Rong-hua Hu, BS

Jing Zhou, PhD

Erin Loring, MS

Jeffrey North, MD

Vikash Oza, MD

Keith A. Choate, MD, PhD

Focal palmoplantar keratoderma and gingival keratosis (FPGK) is a rare autosomal-dominant syndrome featuring focal, pressure-related, painful...

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Photo Challenge

Fungated Eroded Plaque on the Arm

Author:

Daniel L. Sosh, MD

Catherine Chung, MD

Brittany Dulmage, MD

A 39-year-old man from Ohio presented with a tender, 10×6-cm, fungated, eroded plaque on the right medial upper arm that developed over the last 4...

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Dermpath Diagnosis

Erythematous Papules on the Ears

Author:

Cameron M.B. Zachary, MD

Amir A. Bajoghli, MD

Gabriela Hernandez, BS

Helen Kemprecos, BS

Karl M. Saardi, MD

Michael A. Cardis, MD

A 53-year-old man with a history of atopic dermatitis presented with pain and redness of the lobules of both ears of 9 months’ duration. He lived...

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Case Letter

Acute Generalized Exanthematous Pustulosis Induced by the Second-Generation Antipsychotic Cariprazine

Author:

Ryan A. Apgar, MD

Ganary Dabiri, MD, PhD

The second-generation antipsychotic cariprazine has been shown to be a potential causative agent in acute generalized exanthematous pustulosis (...

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Photo Challenge

Itchy Vesicular Rash

Author:

Krishna Patel, BS

Corina Rusu, MD

Virginia A. Miller, DO

Mary Noland, MD

A 38-year-old woman presented with a rash of 5 days’ duration that initially appeared on the wrists after playing with her kitten, with subsequent...

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Photo Challenge

Rapidly Evolving Papulonodular Eruption in the Axilla

Author:

Saira Khan, PA-C

Thomas M. Brown Jr, DO

Angelia L. Stepien, DO

Karthik Krishnamurthy, DO

A 37-year-old woman presented to our dermatology clinic with a pruritic erythematous eruption involving the trunk, axillae, and proximal...

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Case Letter

Chronic Retiform Purpura of the Abdomen and Thighs: A Fatal Case of Intravascular Large Cell Lymphoma

Author:

Nelson Ugwu, MD

Nour Kibbi, MD

Sudhir Perincheri, MBBS, PhD

Richard J. Antaya, MD

Intravascular large cell lymphoma (ILCL) is a rare B-cell lymphoma that is defined by the presence of large neoplastic B cells in the lumen of...

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