title: Cancer of the nasopharynx in under 21-year-olds: a review.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D002277:Carcinoma / Q000175:diagnosis / Q000453:epidemiology*; D002648:Child; D002675:Child, Preschool; D005006:Ethnicity; D005260:Female; D006801:Humans; D008297:Male; D009303:Nasopharyngeal Neoplasms / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy; D012189:Retrospective Studies; D012509:Sarcoma / Q000175:diagnosis / Q000453:epidemiology*; D012737:Sex Factors; D006113:United Kingdom