title: [Diagnosis value of nasopharyngo-fiberscope and CT for microfocal nasopharyngeal carcinoma].
abstract: OBJECTIVE
  To explore the value of nasopharyngo-fiberscope and CT in diagnosing microfocal Nasopharyngeal Carcinoma (NPC) and the prevalent area, the nasopharynx, where the NPC usually initially developed from.
  
  
  METHODS
  From October, 2003 to October,2005, the data of original microfocus of 36 pathologically confirmed NPC were reviewed retrospectively. These cases were examined by nasopharyngo-fiberscope and CT strengthening scanning.
  
  
  RESULTS
  On clinical examination, only 2 cases (5.6%) were found to have original micro-tumor in the recess, the other 34 cases (94.4%) had developed from the other regions including 25 (69.4%) from the roof and 9 cases (25.0%) from the posterior wall, all with smooth and symmetrical mucosa in the recess. Positive rate of nasopharyngeal mass were 100% by nasopharyngo-fiberscope and by CT.
  
  
  CONCLUSIONS
  The data suggested that the roof of nasopharyngeal cavity be the most possible area that the original NPC micro-focus developed from, followed by the posterior wall and the recess. Nasopharyngo-fiberscope and CT is very helpful for the correct clinical diagnosis of NPC.
authors.affiliation: Department of Otorhiolaryngology, Ninth Affiliated Hospital, Guangxi Medical University, Beihai, 536000, China. Liuxg0308@126.com
authors.forename: Xiongguang
authors.initials: X
authors.lastname: Liu
authors.forename: Liping
authors.initials: L
authors.lastname: Yao
authors.forename: Yuning
authors.initials: Y
authors.lastname: Su
mesh_terms: D000328:Adult; D000368:Aged; D002277:Carcinoma / Q000000981:diagnostic imaging* / Q000473:pathology; D019723:Endoscopes; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009303:Nasopharyngeal Neoplasms / Q000000981:diagnostic imaging* / Q000473:pathology; D014057:Tomography, X-Ray Computed / Q000295:instrumentation* / Q000379:methods; D055815:Young Adult