title: [A study on the prognosis of Draf II b surgery in treating fontal sinus inverted papilloma].
abstract: OBJECTIVE
  To evaluate the prognosis of Draf II b surgery in treating fontal sinus inverted papilloma.
  
  
  METHODS
  A retrospective study was carried out among 15 patients diagnosed as fontal sinus inverted papilloma, which had underwent endoscopic Draf II b surgery. The clinical success rate and surgical success rate were calculated by survival analysis.
  
  
  RESULTS
  In all patients, there were 1 (6.67%) recurrence,1 (6.67%) stenosis, 4 (26.67)% complete closure, and 1 (6.67%) mucocele cyst. The 3-year clinical success rate was 93.3%, and the 3-year surgical success rate was 65.0%.
  
  
  CONCLUSIONS
  Draf II b surgery is feasible when the frontal sinus inverted papilloma is involved in the area of the pupil center line, and the frontal neo-ostium stenosis or complete closure is a common complication after surgery. Thus a close follow-up is recommended during the first year after the surgery. Further study is necessary to find a better way to reduce the complication rate.
authors.forename: Rui
authors.initials: R
authors.lastname: Peng
authors.forename: Qian
authors.initials: Q
authors.lastname: Huang
authors.forename: Na
authors.initials: N
authors.lastname: Liang
authors.forename: Shunjiu
authors.initials: S
authors.lastname: Cui
authors.forename: Zhenxiao
authors.initials: Z
authors.lastname: Haung
authors.forename: Yunchuan
authors.initials: Y
authors.lastname: Li
authors.forename: Bing
authors.initials: B
authors.lastname: Zhou
mesh_terms: D003251:Constriction, Pathologic / Q000473:pathology; D004724:Endoscopy; D005626:Frontal Sinus / Q000473:pathology*; D006801:Humans; D009078:Mucocele / Q000473:pathology; D059747:Nasal Surgical Procedures / Q000379:methods*; D009364:Neoplasm Recurrence, Local; D018308:Papilloma, Inverted / Q000601:surgery*; D010255:Paranasal Sinus Neoplasms / Q000601:surgery*; D011183:Postoperative Complications / Q000473:pathology; D011379:Prognosis; D012189:Retrospective Studies; D016019:Survival Analysis; D016896:Treatment Outcome