Rare Diseases

Photo Challenge

Violaceous Patches on the Arm

A 55-year-old man presented with red-violet patches on the right arm and chest that had been present since birth. The patches were asymptomatic...

Case Reports

Lambert-Eaton Myasthenic Syndrome and Merkel Cell Carcinoma

This case of Lambert-Eaton myasthenic syndrome (LEMS) had no clearly identifiable cause on presentation with later diagnosis of metastatic Merkel...

Photo Challenge

Coalescing Papules on Bilateral Mastectomy Scars

A 57-year-old woman with triple-negative ductal breast cancer presented with a mildly pruritic rash on bilateral mastectomy scars of 3 to 4 months...