title: Endoscopic fenestration of the third ventricle in the reverse direction.
abstract: BACKGROUND
  A case of safely treated parasellar cyst by endoscopic fenestration of the third ventricular floor from outside of the ventricle to establish communications between the cyst and the ventricle is reported.
  
  
  METHODS
  During the endoscopic procedures, the anterior commissure and the foramina of Monro could be clearly observed using this approach.
  
  
  CONCLUSIONS
  In treating parasellar cysts with thick walls, endoscopic fenestration of the third ventricular floor in the reverse direction, i.e., from inside of the cyst, should be considered.
authors: Department of Neurosurgery, Brain Research Institute, University of Niigata, Asahimachi 1, Niigata, 951, Japan. nishiken@d4.dion.ne.jp
authors: Kenichi
authors: K
authors: Nishiyama
authors: Hiroshi
authors: H
authors: Mori
authors: Junichi
authors: J
authors: Yoshimura
authors: Yukihiko
authors: Y
authors: Fujii
mesh_terms: D016080:Arachnoid Cysts / Q000473:pathology / Q000601:surgery; D002675:Child, Preschool; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D044583:Neuroendoscopy / Q000379:methods*; D013506:Otologic Surgical Procedures / Q000379:methods*; D020542:Third Ventricle / Q000601:surgery*