Multicentric pigmented Bowen's disease.
D002294:Carcinoma, Squamous Cell / Q000175:diagnosis / Q000473:pathology*; D003937:Diagnosis, Differential; D003972:Diathermy; D006801:Humans; D008297:Male; D008875:Middle Aged; D010859:Pigmentation Disorders / Q000150:complications*; D012878:Skin Neoplasms / Q000473:pathology*; D014860:Warts / Q000175:diagnosis