title: [Endoscopic surgery in sinonasal inverted papillomas].
abstract: OBJECTIVE
  To evaluate the effect and application value of endoscopic resection in sinonasal inverted papillomas.
  
  
  METHODS
  In a retrospective study, clinical data of 40 patients underwent transnasal endoscopic approach in Chinese PLA General Hospital from July 1999 to April 2005 were analyzed. Tumor stage according to Krouse was T1: 4, T2: 23, T3: 12, T4: 1, respectively.
  
  
  RESULTS
  All lesions were removed completely and 5 patients received post-operative radiation therapy. There were no serious complications occurred. The follow-up period ranged from 24 to 93 months (mean, 45.1 months). Recurrence rate was 15% (6/40) and the rate of malignant transformation and mortality were 7.5 % (3/40), respectively. Average time to recurrence was 37.3 months.
  
  
  CONCLUSIONS
  Endoscopic surgery offers a safe and effective treatment for sinonasal inverted papillomas with a minimally invasion. Thorough removal of the tumor and regular follow-up are the key points for success.
authors: Department of Otolaryngology-Head and Neck Surgery, Chinese PLA General Hospital, Beijing 100853, China.
authors: Gang
authors: G
authors: Wang
authors: Lei
authors: L
authors: Chen
authors: Rongguang
authors: R
authors: Wang
mesh_terms: D000328:Adult; D000368:Aged; D004724:Endoscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009669:Nose Neoplasms / Q000601:surgery; D018308:Papilloma, Inverted / Q000601:surgery*; D010255:Paranasal Sinus Neoplasms / Q000601:surgery*; D012189:Retrospective Studies