Seborrheic keratoses of penis.

A case is reported of a forty-nine-year-old black man in whom numerous skin-colored papules and verrucoid plaques had developed on his penis over the course of fifteen years. He did not seek medical attention, and some of the lesions had become quite large. The initial clinical impression was condyloma acuminatum, and prior to therapeutic intervention histologic evaluation revealed findings diagnostic of seborrheic keratosis. Seborrheic keratoses should be considered in the differential diagnosis of penile lesions especially because of clinical similarities to condylomata acuminata.