title: [Application of narrow band imaging endoscopy in early diagnosis of nasopharyngeal carcinoma].
abstract: OBJECTIVE
  To investigate the use of NBI (narrow band imaging) in early the diagnosis of nasopharyngeal carcinoma.
  
  
  METHODS
  A total of 55 cases with nasopharyngeal lesions (including 9 cases of nasopharyngeal carcinoma after treatment) were examined and diagnosed by white and NBI endoscopy between October 2011 and March 2012, and their diagnosis efficacies were evaluated based on pathological diagnosis as a gold standard. Chi-square test was used to analyze data.
  
  
  RESULTS
  Of 55 cases, 12 cases were pathologically diagnosed as chronic mucosa inflammation and 43 as nasopharyngeal carcinoma including 6 recurrent cases, of 43 cases, 40(93.0%) were diagnosed by NBI endoscopy and 18 (41.9%) by white endoscopy. Of 12 cases with early nasopharyngeal carcinoma (5 for stage I and 7 for stage II) , 5(100.0%) for stage I, and 6(85.7%) for stage II were diagnosed by NBI endoscopy but only 1(14.3%) for stage II by white endoscopy, with a statistically significant difference (χ(2) = 10.000, P = 0.008;χ(2) = 7.143, P = 0.029).
  
  
  CONCLUSIONS
  NBI endoscopy can be used in early diagnosis of nasopharyngeal carcinoma and check after treatment.
authors.affiliation: Department of Otolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Department of Otolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China. Email: syfklxf@126.com.
authors.forename: Yongfeng
authors.initials: Y
authors.lastname: Si
authors.affiliation: Department of Otolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China.
authors.forename: Zhuoxia
authors.initials: Z
authors.lastname: Deng
authors.affiliation: Department of Otolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China.
authors.forename: Yangda
authors.initials: Y
authors.lastname: Qin
authors.affiliation: Department of Otolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China.
authors.forename: Bo
authors.initials: B
authors.lastname: Huang
authors.affiliation: Department of Otolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China.
authors.forename: Guiping
authors.initials: G
authors.lastname: Lan
authors.affiliation: Department of Otolaryngology Head and Neck Tumor of Guangxi Zhuang Autonomous Region People's Hospital, Nanning 530021, China.
authors.forename: Xing
authors.initials: X
authors.lastname: Han
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002277:Carcinoma; D055088:Early Detection of Cancer; D004724:Endoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D062048:Narrow Band Imaging; D000077274:Nasopharyngeal Carcinoma; D009303:Nasopharyngeal Neoplasms / Q000175:diagnosis*; D055815:Young Adult