title: [Endoscopic frontal sinus surgery through agger nasi cell approach].
abstract: OBJECTIVE
  To evaluate the access to the frontal recess by identifying the agger nasi cell and uncinate process.
  
  
  METHODS
  Forty-seven patients (85 sides) who underwent endoscopic frontal sinus surgery in our department constituted the study population. Computed tomographic (CT) scans of the sinuses were obtained in coronal and axial views. The frontal ostium was identified by using agger nasi cell approach or identifying the uncinate process.
  
  
  RESULTS
  The frontal sinus ostium was identified in 100% of patients (85 sides). After an average follow-up of 9 months, 41 sides of 49 sides (84%) had endoscopically healed sinuses by using agger nasi cell approach. And 21 sides of 36 sides (81%) had endoscopically healed sinuses by identifying the uncinate process.
  
  
  CONCLUSIONS
  The agger nasi cell approach to the frontal recess gives an access and allows identification of the frontal ostium. In addition, it provides direct visualization with a 0 degree endoscope into the frontal recess.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, Beijing TongRen Hospital, Affiliated to the Capital University of Medical Sciences, Beijing 100730, China. Luozhang@trhos.com
authors.forename: Luo
authors.initials: L
authors.lastname: Zhang
authors.forename: Bing
authors.initials: B
authors.lastname: Zhou
authors.forename: Wen-tong
authors.initials: WT
authors.lastname: Ge
authors.forename: Qing-wen
authors.initials: QW
authors.lastname: Yang
authors.forename: Shu-bin
authors.initials: SB
authors.lastname: Chen
authors.forename: Quan-Sheng
authors.initials: QS
authors.lastname: Li
authors.forename: De-min
authors.initials: DM
authors.lastname: Han
mesh_terms: D000328:Adult; D002908:Chronic Disease; D004724:Endoscopy / Q000379:methods*; D005260:Female; D005626:Frontal Sinus / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009296:Nasal Cavity; D009666:Nose / Q000601:surgery*; D010256:Paranasal Sinuses; D012852:Sinusitis / Q000601:surgery*