title: Outcomes of posterior lacrimal sac approach in endoscopic dacryocystorhinostomy: review of 35 cases.
abstract: BACKGROUND
  The purpose of this study was to describe the posterior lacrimal sac approach in endoscopic dacryocystorhinostomy (DCR) performed at our institute and report perioperative results achieved with this procedure.
  
  
  METHODS
  A prospective clinical study was performed of 35 adult patients with nasolacrimal duct obstruction who underwent posterior lacrimal sac approach DCR from March 1998 to May 2005. Follow-up period ranged from 13 to 30 months (average, 17.5 months; SD, 6.8 months). "Surgical success" was defined as complete relief of epiphora and patent surgical ostium on endoscopic assessment.
  
  
  RESULTS
  Surgical success was achieved in 30/35 (85.7%) patients after the primary surgery. Of 5 unsuccessful patients who complained of occasional epiphora, 4 patients had formed stenosis and 1 patient had granulation around the surgical opening, and all had revision surgery. Four of 5 (80.0%) patients achieved surgical success. Thus, including the result of revision surgery, 34/35 (97.1%) patients were successful.
  
  
  CONCLUSIONS
  Posterior lacrimal sac approach in endoscopic DCR has several advantages: good sac accessibility, a low complication rate, and a relatively high success rate. Therefore, the posterior lacrimal sac approach appears to offer a useful alternative approach for the surgical treatment of nasolacrimal duct obstruction.
authors.affiliation: Department of Otolaryngology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea. fess0101@hanmail.net
authors.forename: Kyung Chul
authors.initials: KC
authors.lastname: Lee
mesh_terms: D000328:Adult; D000368:Aged; D003608:Dacryocystorhinostomy / Q000379:methods*; D004724:Endoscopy / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009301:Nasolacrimal Duct / Q000601:surgery*; D010256:Paranasal Sinuses / Q000000981:diagnostic imaging*; D019990:Perioperative Care; D011182:Postoperative Care; D011859:Radiography; D016896:Treatment Outcome