Dermoscopy of cutaneous involvement by multiple myeloma

A 64-year-old man presented with a 4-week history of asymptomatic, fast growing nodules on his retroauricular skin, the upper aspects of his arms, his right thigh, his left axilla, and scalp (Fig 1). Recent nodules were pink; older lesions were violaceous. The patient was affected by immunoglobulin G multiple myeloma (MM).

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