title: Nasopharyngeal angiofibroma: (a report of 21 cases treated surgically).
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D018219:Histiocytoma, Benign Fibrous / Q000601:surgery*; D006801:Humans; D008297:Male; D009303:Nasopharyngeal Neoplasms / Q000601:surgery*