title: Management of distal posterior inferior cerebellar artery aneurysms.
abstract: BACKGROUND
  Most of the posterior inferior cerebellar artery (PICA) aneurysms arise at the vertebral artery-PICA junction; distal PICA aneurysms are rare. Their clinical features and treatments are not fully understood.
  
  
  METHODS
  This was a retrospective study. We reported 9 patients with the distal PICA aneurysms treated by surgical clipping or endovascular embolization in our neurosurgical center.
  
  
  RESULTS
  All patients experienced sudden onset of headache with subarachnoid hemorrhage. The location of PICA aneurysms was at the anterior-medullary (n = 4), tonsillomedullary (TM) (n = 1), and telovelotonsillar (n = 4). Surgical clipping was performed in 3 and endovascular coil in 6 patients. All the PICA aneurysms were occluded with parent artery preservation, and all of the patients achieved good recovery.
  
  
  CONCLUSIONS
  Distal PICA aneurysm is exceptionally rare; it could be treated successfully with surgical clipping or endovascular treatments.
authors.affiliation: Department of Neurosurgery, Zhangzhou Municipal Hospital, Zhangzhou, China. lrs_submit@sina.com
authors.forename: Rui-shen
authors.initials: RS
authors.lastname: Lin
authors.forename: Weiwei
authors.initials: W
authors.lastname: Wang
authors.forename: Aishu
authors.initials: A
authors.lastname: Guo
mesh_terms: D000328:Adult; D002531:Cerebellum / Q000098:blood supply* / Q000000981:diagnostic imaging; D004621:Embolization, Therapeutic / Q000379:methods*; D005260:Female; D015600:Glasgow Coma Scale; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000601:surgery / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013345:Subarachnoid Hemorrhage / Q000000981:diagnostic imaging / Q000601:surgery / Q000628:therapy*; D013525:Surgical Instruments; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome