Derm Dx: Dark papules after stage IA melanoma

A 68-year-old white male with a history of stage IA melanoma presents for his annual full body skin exam. He complains of dark papules on his left ear. The lesions are asymptomatic.

On exam, you notice a well-healed scar on his left upper back at the site of melanoma excision. You also note several dark blue macules and papules on ...