Acrosyringeal nevus.
D006607:Adenoma, Sweat Gland / Q000473:pathology; D000293:Adolescent; D004439:Eccrine Glands / Q000473:pathology; D005260:Female; D006225:Hand; D006801:Humans; D012867:Skin / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology