title: Ventriculoscopic surgery for arachnoid cysts in the lateral ventricle: a comparative study of 21 consecutive cases.
abstract: OBJECTIVE
  To evaluate neuronavigation-guided ventriculoscopic technique in the treatment of arachnoid cysts in the lateral ventricle.
  
  
  METHODS
  Between January 2008 to November 2011, twenty-one neuronavigationguided ventriculoscopic surgery were performed for the treatment of symptomatic arachnoid cysts in 21 patients (14 male and 7 female patients, mean age 24.1 years [ranged 1.5-61 years]) Clinical presentations varied from headache, vomiting, hemiparesis and seizure. The trajectory of ventriculoscopy was dynamically monitored and guided in real time by neuronavigation system. Cysts fenestrations were performed in fourteen cases, and cysts resection in seven cases, respectively. All patients were prospectively had a regular follow-up.
  
  
  RESULTS
  After operation, all patients achieved symptom resolution without surgical mortality and morbidity. Aseptic meningitis was noted in four cases with cyst resection, and all recovered quickly without advanced treatments. However, a later ependymal adhesion, occurred in one case during follow-up period.
  
  
  CONCLUSIONS
  The combination of ventriculoscopy and neuronavigation is an accurate, effective and safe approach for the treatment of the patients with arachnoid cysts in the lateral ventricle, especially, for overcoming the topographic variation caused by intraventricular pathologies. Cystoventriculostomy is the best choice.
authors.affiliation: Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University China.
authors.forename: Xuefei
authors.initials: X
authors.lastname: Shou
authors.affiliation: Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Zhao
authors.affiliation: Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University China.
authors.forename: Shiqi
authors.initials: S
authors.lastname: Li
authors.affiliation: Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University China.
authors.forename: Yongfei
authors.initials: Y
authors.lastname: Wang
keywords: Ventriculoscopy; arachnoid cyst; fenestration; lateral ventricle; neuronavigation; resection