title: [A new classification of extensions of the sphenoid sinus of Chinese adult by CT].
abstract: OBJECTIVE
  To examine various pneumatized extensions of the sphenoid sinus of Chinese people.
  
  
  METHODS
  The sphenoid sinus and its surrounding structures were examined from 100 computed tomography images of the sinus. The type of the sphenoid sinus was classified according to the various extensions of the sinus.
  
  
  RESULTS
  The type of the sphenoid sinus was classified into the following 6 basic types based on the direction of pneumatization: sphenoid body, lateral, clival, lesser wing, anterior, and combined.
  
  
  CONCLUSIONS
  The variations in the extensions of pneumatization of the sphenoid sinus may facilitate entry into areas bordering the sphenoid sinus.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Sun
authors.forename: Zhongbo
authors.initials: Z
authors.lastname: Shan
authors.forename: Jianping
authors.initials: J
authors.lastname: Jia
authors.forename: Song
authors.initials: S
authors.lastname: Dai
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Liu
authors.forename: Yuehong
authors.initials: Y
authors.lastname: Sang
authors.forename: Delong
authors.initials: D
authors.lastname: Chang
authors.forename: Yue
authors.initials: Y
authors.lastname: Hou
authors.forename: Wei
authors.initials: W
authors.lastname: Zhang
mesh_terms: D000328:Adult; D044466:Asian People; D006801:Humans; D013100:Sphenoid Bone / Q000033:anatomy & histology; D013101:Sphenoid Sinus / Q000033:anatomy & histology*; D014057:Tomography, X-Ray Computed