Multiple papules in a localized area. Segmental neurofibromatosis.
D000293:Adolescent; D001415:Back / Q000473:pathology; D001706:Biopsy; D006801:Humans; D008297:Male; D009456:Neurofibromatosis 1 / Q000145:classification* / Q000235:genetics / Q000473:pathology; D012878:Skin Neoplasms / Q000473:pathology*