title: [Endoscopic treatment for fourth ventricular outlet obstruction].
abstract: OBJECTIVE
  To explore the therapeutic efficacies of endoscope for fourth ventricular outlet obstruction (FVOO).
  
  
  METHODS
  Endoscopic third ventriculostomy (ETV) was performed for 30 cases. The circumstances of third ventricular floor and basal cistern were observed and recorded intra-operatively. Meanwhile the fourth ventricular exploration and fistulation were performed across enlarged aqueduct. And the velocity and flow rate of aqueduct, fourth ventricular outlet and stoma were evaluated post-operatively with Cine-MR (magnetic resonance).
  
  
  RESULTS
  Standard ETV was performed successfully in 28 patients. Fourth ventricular exploration (n = 6) and outlet membrane fistulation (n = 2) were carried out. The mean follow-up period was 2.3 years (range: 0.5 - 4.0). The overall success rate was 78.6%.
  
  
  CONCLUSIONS
  ETV is a viable therapeutic option for FVOO patients. The therapeutic effects of outlet membrane fistulation require further observations.
authors.affiliation: Department of Neurosurgery, Affiliated Shijitan Hospital, Capital Medical University, Beijing 100038, China. neur07@163.com
authors.forename: Zhi-qiang
authors.initials: ZQ
authors.lastname: Hu
authors.forename: Feng
authors.initials: F
authors.lastname: Guan
authors.forename: Hui
authors.initials: H
authors.lastname: Huang
authors.forename: Guang-tong
authors.initials: GT
authors.lastname: Zhu
authors.forename: Bei-bei
authors.initials: BB
authors.lastname: Mao
authors.forename: Shao-heng
authors.initials: SH
authors.lastname: Wang
authors.forename: Zhuang
authors.initials: Z
authors.lastname: Kang
mesh_terms: D000293:Adolescent; D001927:Brain Diseases / Q000601:surgery*; D002648:Child; D002675:Child, Preschool; D004724:Endoscopy; D020546:Fourth Ventricle / Q000473:pathology; D006801:Humans; D007223:Infant; D019635:Neurosurgical Procedures / Q000379:methods; D016896:Treatment Outcome; D014696:Ventriculostomy / Q000379:methods*