title: Revision endoscopic sinus surgery: the St. Paul's Sinus Centre experience.
abstract: OBJECTIVE
  To determine the most common findings in patients undergoing revision endoscopic sinus surgery (ESS) presenting to a tertiary rhinology centre. It is our aim that by identifying these findings, the common pitfalls in primary ESS can be avoided to prevent the necessity for revision ESS.
  
  
  METHODS
  The findings of 73 cases of revision ESS from July 2006 to March 2007 presenting to the St. Paul's Sinus Centre were recorded and then presented.
  
  
  RESULTS
  There are many common findings at revision ESS, including residual uncinate process, persistent septal deviation, nonphysiologic maxillary antrostomies, incomplete ethmoidectomy, and partial or total resection of the middle and superior turbinate, resulting in the formation of the "uniturbinate."
  
  
  CONCLUSIONS
  Many common findings in revision ESS can be avoided with proper primary surgery.
authors.affiliation: St Paul's Sinus Centre, St Paul's Hospital, Vancouver, British Columbia.
authors.forename: Brad
authors.initials: B
authors.lastname: Mechor
authors.forename: Amin R
authors.initials: AR
authors.lastname: Javer
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000368:Aged; D000369:Aged, 80 and over; D001955:British Columbia; D002908:Chronic Disease; D015331:Cohort Studies; D004724:Endoscopy / Q000009:adverse effects* / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D010256:Paranasal Sinuses / Q000503:physiopathology / Q000601:surgery; D011183:Postoperative Complications / Q000453:epidemiology / Q000601:surgery; D011336:Probability; D012086:Reoperation / Q000379:methods / Q000706:statistics & numerical data; D012220:Rhinitis / Q000175:diagnosis / Q000601:surgery*; D018570:Risk Assessment; D017678:Sex Distribution; D012852:Sinusitis / Q000175:diagnosis / Q000601:surgery*; D018709:Statistics, Nonparametric; D016896:Treatment Outcome; D055815:Young Adult