title: [Resection of the ossifying fibroma of paranasal sinuses and anterior skull base with nasal endoscope under the guidance of image navigation].
abstract: OBJECTIVE
  To discuss the role of image navigation in resection of the ossifying fibroma of paranasal sinuses and anterior skull base with nasal endoscope.
  
  
  METHODS
  Fourteen cases with ossifying fibroma involving paranasal sinuses and anterior skull base were underwent intranasal endoscopic surgery under the guidance of image navigation. Sequential nasal sinuses CT scans were obtained before and after operation. CT scans demonstrated that the nasal septum, orbital wall and anterior skull base were involved in every case. The anterior boundary of the frontal recess cells was involved in 10 cases. The lesions were adjacent to the orbital apex and optic canal in 5 cases. The sella turcica and clivus were invaded in 3 cases and the pterygopalatine fossa was invaded in 2 cases.
  
  
  RESULTS
  The tumors were thoroughly removed in all cases. The average operative time was 280 minutes and the average registration time of navigation was 9 minutes. Postoperation CT scans demonstrated that the tumors were totally resected.
  
  
  CONCLUSIONS
  The image-guided endoscopic surgery of the ossifying fibroma of paranasal sinuses and anterior skull base provided accurate tumor resection, increased surgical effectiveness, decreased overall surgical complications.
authors.affiliation: Department of Otolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing 100730, China.
authors.forename: Jingying
authors.initials: J
authors.lastname: Ma
authors.forename: Bing
authors.initials: B
authors.lastname: Zhou
authors.forename: Shunjiu
authors.initials: S
authors.lastname: Cui
authors.forename: Qian
authors.initials: Q
authors.lastname: Huang
authors.forename: Zheng
authors.initials: Z
authors.lastname: Yang
authors.forename: Guisheng
authors.initials: G
authors.lastname: Wang
mesh_terms: D000293:Adolescent; D000328:Adult; D002648:Child; D002675:Child, Preschool; D004724:Endoscopy / Q000379:methods*; D005260:Female; D018214:Fibroma, Ossifying / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010255:Paranasal Sinus Neoplasms / Q000601:surgery*; D010256:Paranasal Sinuses; D019291:Skull Base; D025321:Surgery, Computer-Assisted; D055815:Young Adult