Juvenile nasopharyngeal angiofibroma.
D000293:Adolescent; D000328:Adult; D018219:Histiocytoma, Benign Fibrous / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy; D006801:Humans; D008297:Male; D009303:Nasopharyngeal Neoplasms / Q000175:diagnosis / Q000473:pathology* / Q000628:therapy