Dermpath Diagnosis

Mobile Enlarging Scalp Nodule

A 50-year-old man presented with a 2.5-cm, subcutaneous, freely mobile nodule on the occipital scalp that first appeared 35 years prior but...


Advocacy Update: Ringing in 2023

We review the new digital pathology codes released on July 1, 2022, that will go into effect January 1, 2023. We also discuss the proposed...


Photo Challenge

Multiple Annular Erythematous Plaques

A 59-year-old man was admitted to the medical ward with multiple annular erythematous plaques and polyarthralgia of several months’ duration. His...

Photo Challenge

Yellow Nodule on the Scalp

A 45-year-old woman was referred to dermatology by a primary care physician for evaluation of a raised skin lesion on the scalp. The lesion had...

Dermpath Diagnosis

Yellow Papules and Plaques on a Child

A 3-year-old girl presented with raised, firm, enlarging, asymptomatic, well-defined, subcutaneous papules, plaques, and nodules on the hands,...