See answer details: Moles, or pigmented nevi, can occur on any part of the penis just as they do on any other area of the body. The vast majority are benign, harmless, and require no treatment. Malignant melanoma can occur on the glans penis or shaft, though this is a very rare occurrence and primarily confined to the elderly. Increasing size, irregular borders, changing colors certainly warrant exam by dermatologist
Answered 10/12/2015
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