title: [Transnasal endoscopic frontal sinus surgery using expanded agger nasi approach].
abstract: OBJECTIVE
  To explore the feasibility of endoscopic modified agger nasi approach for the surgical treatment of frontal sinus diseases.
  
  
  METHODS
  The data of patients undergoing modified agger nasi approach for frontal diseases were prospectively collected since January 2009, including demographic data, findings at surgery, presence of postoperative symptoms, endoscopic appearance of the frontal recess and sinus, and complications.
  
  
  RESULTS
  Nineteen patients were enrolled from January 2009 to August 2010. Seventeen patients had chronic rhinosinusitis, in which 13 patients (76.5%) completely healed, 3 patients (17.6%) improved and 1 patient (5.9%) failed. Two patients had frontal sinus and anterior ethmoid sinus inverted papilloma, with no recurrence. The patients were followed up from 6 to 24 months, medium 16 months. No severe complication occurred. No frontal recess adhesion was found. Four sides of frontal recess showed stenosis caused by tissue hypertrophy.
  
  
  CONCLUSIONS
  The modified agger nasi approach provides excellent access to frontal recess and frontal sinus, with good effect for preventing re-stenosis after surgery.
authors.affiliation: Otorhinolaryngology Hospital, First Affiliated Hospital of SUN Yat-sen University, Guangzhou 510080, China.
authors.forename: Jian-bo
authors.initials: JB
authors.lastname: Shi
authors.forename: Feng-hong
authors.initials: FH
authors.lastname: Chen
authors.forename: Rui
authors.initials: R
authors.lastname: Xu
authors.forename: Ke-jun
authors.initials: KJ
authors.lastname: Zuo
authors.forename: Jie
authors.initials: J
authors.lastname: Deng
authors.forename: Geng
authors.initials: G
authors.lastname: Xu
mesh_terms: D000328:Adult; D004724:Endoscopy; D005260:Female; D005626:Frontal Sinus / Q000601:surgery*; D015522:Frontal Sinusitis / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009666:Nose / Q000601:surgery*; D013517:Otorhinolaryngologic Surgical Procedures / Q000379:methods*; D011446:Prospective Studies; D055815:Young Adult