Dermatopathology

Photo Challenge

Tender Annular Plaque on the Thigh

A 58-year-old man who was receiving gilteritinib therapy for relapsed acute myeloid leukemia presented to the emergency department with a painful...

Dermpath Diagnosis

Soft Nodule on the Forearm

A 54-year-old woman presented with an enlarging mass on the right volar forearm. Physical examination revealed a 1-cm, soft, mobile, subcutaneous...

MD IQ

Photo Challenge

Painful Psoriasiform Plaques

A 45-year-old woman presented to the emergency department with a painful skin eruption and malaise of 5 weeks’ duration. She had an orthotopic...

Photo Challenge

Pedunculated Tumor on the Posterior Neck

A 56-year-old man presented with a progressively enlarging lesion on the posterior neck of 8 months’ duration. He reported localized pruritus of...

Dermpath Diagnosis

Erythematous and Ulcerated Plaque on the Left Temple

A 72-year-old man with a history of nonmelanoma skin cancer and lung transplant maintained on stable doses of prednisone and tacrolimus presented...

Case Letter

A Severe Presentation of Plasma Cell Cheilitis

Plasma cell cheilitis (PCC) is an uncommon condition characterized by mature plasma cell infiltration of the dermis of the mucosal lip. We present...

Photo Challenge

Verrucous Scalp Plaque and Widespread Eruption

A 40-year-old man presented for evaluation of a thick verrucous plaque throughout the scalp extending onto the forehead; thick plaques on the...

Case Letter

Cutaneous Protothecosis

Cutaneous protothecosis has the potential to mimic many other skin diseases and lesions, including eczema; nonmelanoma skin cancer; or bacterial,...

Case Letter

Verrucous Carcinoma in a Wounded Military Amputee

Verrucous carcinoma is a rare, well-differentiated, locally aggressive squamous cell carcinoma that commonly occurs in sites of inflammation or...

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