title: A targeted endoscopic approach to chronic isolated frontal sinusitis.
abstract: OBJECTIVE
  Chronic isolated frontal sinusitis occurs infrequently. In this condition, most of the ethmoid cells are well aerated and the frontal sinus is involved secondary to anatomical obstruction or inflammatory changes confined to the frontal recess. The purpose of this study was to evaluate a targeted endoscopic technique where standard anterior ethmoidectomy is unnecessary in the treatment of chronic isolated frontal sinusitis.
  
  
  METHODS
  This retrospective study was conducted in a large university-affiliated hospital and included 11 patients with chronic isolated frontal sinusitis who underwent endoscopic sinus surgery limited to the frontal sinus outflow. The ethmoid bulla was untouched in all cases. Follow-up continued for 19 to 40 months (mean 28.6 months).
  
  
  RESULTS
  Frontal sinus outflow patency was verified in 9 patients (81.8%). Nine patients, including one with an apparent nonpatent frontal ostium, reported improvement. Two patients-one of whom had a patent frontal ostium-reported no improvement. There were no complications.
  
  
  CONCLUSIONS
  Chronic isolated frontal sinusitis can be effectively treated in selected cases by a targeted endoscopic procedure, limited to reestablishment of frontal sinus outflow.
  
  
  METHODS
  C-4.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Tel-Aviv Sourasky Medical Center, Sackler Faculty of Medicine, 6 Weitzman Street, Tel Aviv 64239, Israel. jeroy@bezeqint.net
authors.forename: Roee
authors.initials: R
authors.lastname: Landsberg
authors.forename: Yoram
authors.initials: Y
authors.lastname: Segev
authors.forename: Michael
authors.initials: M
authors.lastname: Friedman
authors.forename: Dan M
authors.initials: DM
authors.lastname: Fliss
authors.forename: Ari
authors.initials: A
authors.lastname: Derowe
mesh_terms: D000328:Adult; D002648:Child; D002908:Chronic Disease; D004724:Endoscopy / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D015522:Frontal Sinusitis / Q000209:etiology / Q000503:physiopathology / Q000601:surgery*; D006801:Humans; D008297:Male; D020127:Recovery of Function / Q000502:physiology; D012189:Retrospective Studies; D016896:Treatment Outcome