[Clinical studies of malignant nasopharyngeal tumor].
D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007564:Japan; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000453:epidemiology / Q000401:mortality / Q000473:pathology / Q000532:radiotherapy; D011379:Prognosis; D012737:Sex Factors