title: Endovascular treatment of giant intracranial aneurysms with willis covered stents: technical case report.
abstract: OBJECTIVE
  To evaluate the efficacy of endovascular treatment of giant intracranial aneurysms with Willis covered stents (Micro-Port, Shanghai, China).
  
  
  METHODS
  The endovascular treatment of two cases of giant intracranial aneurysm was successfully accomplished by the placement of Willis covered stents specially designed for intracranial use. Both patients presented with symptoms of cavernous mass effect that resulted from a giant aneurysm in the cavernous segment of the internal carotid artery.
  
  
  METHODS
  Three Willis covered stents were successfully placed in two patients. Immediate postprocedure angiograms demonstrated some endoleak of the aneurysms. In one patient, the endoleak was eliminated and complete exclusion of the aneurysms was confirmed with follow-up angiography. However, the other patient required the placement of a new Willis covered stent.
  
  
  CONCLUSIONS
  The use of covered stents in intracranial vascular structures is a feasible method to treat selected cases of intracranial giant aneurysms. It is suggested that patients who present with compressive mass effect caused by large or giant aneurysms are the best candidates for covered stent placement, but potential complications should be considered carefully before the stenting procedure.
authors.affiliation: Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai, China.
authors.forename: Jian B
authors.initials: JB
authors.lastname: Wang
authors.forename: Ming H
authors.initials: MH
authors.lastname: Li
authors.forename: Chun
authors.initials: C
authors.lastname: Fang
authors.forename: Wu
authors.initials: W
authors.lastname: Wang
authors.forename: Ying S
authors.initials: YS
authors.lastname: Cheng
authors.forename: Pei L
authors.initials: PL
authors.lastname: Zhang
authors.forename: Zhuo Y
authors.initials: ZY
authors.lastname: Du
authors.forename: Jue
authors.initials: J
authors.lastname: Wang
mesh_terms: D000328:Adult; D002533:Cerebral Angiography; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D019635:Neurosurgical Procedures / Q000295:instrumentation*; D015607:Stents; D014656:Vascular Surgical Procedures / Q000295:instrumentation*