Fibrosarcoma arising in a juvenile nasopharyngeal angiofibroma following extensive radiation therapy.
D018322:Angiofibroma; D005354:Fibrosarcoma; D006391:Hemangioma; D018219:Histiocytoma, Benign Fibrous; D006801:Humans; D009303:Nasopharyngeal Neoplasms
ANGIOMA, SCLEROSING; FIBROSARCOMA; NASOPHARYNX/neoplasms