The so-called juvenile angio-fibroma of the nasopharynx.
D000293:Adolescent; D005350:Fibroma; D006391:Hemangioma; D018219:Histiocytoma, Benign Fibrous; D006801:Humans; D009303:Nasopharyngeal Neoplasms
ANGIOMA, SCLEROSING; NASOPHARYNX/neoplasms