An enlarging lesion on the knee of a teenager. Becker nevus.
Monroe
Joe R
JR
Regional Dermatology Clinic, Bartlesville, Oklahoma, USA.
D000293:Adolescent; D001707:Biopsy, Needle; D003937:Diagnosis, Differential; D006801:Humans; D006983:Hypertrichosis / Q000473:pathology; D008297:Male; D009508:Nevus, Pigmented / Q000175:diagnosis* / Q000473:pathology; D012878:Skin Neoplasms / Q000175:diagnosis* / Q000473:pathology