Nasopharyngeal malignancy in childhood.
D000293:Adolescent; D002295:Carcinoma, Transitional Cell / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy; D003937:Diagnosis, Differential; D004844:Epistaxis / Q000175:diagnosis; D006801:Humans; D006965:Hyperplasia; D008297:Male; D009303:Nasopharyngeal Neoplasms / Q000175:diagnosis* / Q000453:epidemiology / Q000628:therapy; D011379:Prognosis; D044469:Racial Groups