title: [Application of maxillary bone eversion reduction on benign tumor in nasal cavity and paranasal sinus invading the skull base].
abstract: OBJECTIVE
  To investigate the operative methods for benign tumors in nasal cavity and paranasal sinus invading the skull base.
  
  
  METHODS
  Six cases of benign tumors in nasal cavity and paranasal sinus invading the skull base were reported. Of them, 3 were ossifying fibromas, 1 osteoma, 1 osteochondroma and 1 giant osteoid osteoma. The tumors were removed by combined approaches through unilateral maxillary bone eversion reduction.
  
  
  RESULTS
  No complication was found. Follow-up was made 2-3 years after operation. Five cases were uneventful, 1 had a relapse of tumor but still alive.
  
  
  CONCLUSIONS
  The method is appropriate for treating benign tumors in nasal cavity and paranasal sinus invading the skull base.
authors.affiliation: First Hospital, Shanxi Medical University, Taiyuan 030001.
authors.forename: B
authors.initials: B
authors.lastname: Wang
authors.forename: J
authors.initials: J
authors.lastname: Wang
authors.forename: N
authors.initials: N
authors.lastname: Zhang
mesh_terms: D000328:Adult; D001859:Bone Neoplasms / Q000473:pathology / Q000601:surgery*; D005260:Female; D018214:Fibroma, Ossifying / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008297:Male; D008441:Maxillary Neoplasms / Q000601:surgery*; D008875:Middle Aged; D009296:Nasal Cavity; D009361:Neoplasm Invasiveness; D009669:Nose Neoplasms / Q000601:surgery; D015831:Osteochondroma / Q000473:pathology / Q000601:surgery; D010016:Osteoma / Q000473:pathology / Q000601:surgery; D013517:Otorhinolaryngologic Surgical Procedures / Q000379:methods; D019292:Skull Base Neoplasms / Q000473:pathology / Q000601:surgery