title: Parent vessel occlusion for P2 dissecting aneurysms of the posterior cerebral artery.
abstract: BACKGROUND
  Dissecting aneurysms of the PCA are difficult to treat with preservation of the parent arteries. We report the clinical and angiographic outcome for 8 patients with dissecting aneurysms located at the P2 segment of the PCA.
  
  
  METHODS
  In the past 5 years, 8 patients, 2 female and 6 male, presented to our institution with P2 dissecting aneurysms of the PCA and were treated endovascularly. The age of our patients ranged from 4 to 58 years, with a mean age of 34.4. Of the 8 patients, 5 had subarachnoid and/or intracerebral hemorrhage upon presentation. Two patients with P2 dissecting aneurysms presented with mild hemiparesis and hypoesthesia; 1 patient with a large dissecting aneurysm complained of headaches.
  
  
  RESULTS
  Eight patients with P2 aneurysms of the PCA underwent PVO. Parent vessel occlusions were performed with detachable coils. No patient developed neurologic deficits.
  
  
  CONCLUSIONS
  P2 dissecting aneurysms can be treated with PVO in the cases in which selective embolization of the aneurismal sac with detachable platinum coils or surgical clipping cannot be achieved.
authors.affiliation: Beijing Neurosurgical Institute, Beijing Tiantan Hospital, Capital Medical University, Beijing, The People's Republic of China.
authors.forename: Xianli
authors.initials: X
authors.lastname: Lv
authors.forename: Youxiang
authors.initials: Y
authors.lastname: Li
authors.forename: Chuhan
authors.initials: C
authors.lastname: Jiang
authors.forename: Xinjian
authors.initials: X
authors.lastname: Yang
authors.forename: Zhongxue
authors.initials: Z
authors.lastname: Wu
mesh_terms: D000328:Adult; D000784:Aortic Dissection / Q000000981:diagnostic imaging* / Q000628:therapy*; D002533:Cerebral Angiography; D002675:Child, Preschool; D004621:Embolization, Therapeutic; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging* / Q000628:therapy*; D008875:Middle Aged; D010984:Platinum; D020769:Posterior Cerebral Artery / Q000000981:diagnostic imaging; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging / Q000628:therapy; D016896:Treatment Outcome
chemical_list: D010984:Platinum