title: Basilar tip aneurysm: endovascular treatment with Guglielmi detachable coils--midterm results.
abstract: OBJECTIVE
  To determine the safety and effectiveness of Guglielmi detachable coils in the endovascular treatment of ruptured and nonruptured basilar tip aneurysms.
  
  
  METHODS
  A basilar tip aneurysm was occluded with Guglielmi detachable coils in 21 patients. The aneurysmal diameter was small (less than 12 mm) in 15 patients, large (12-25 mm) in four patients, and giant (more than 25 mm) in two patients. Angiographic follow-up ranged from 6 to 48 months (mean, 26 months); clinical follow-up ranged from 1 to 48 months.
  
  
  RESULTS
  Embolization was technically successful in all patients. Complete occlusion was achieved in 14 (67%) patients; 90% occlusion was achieved in seven (33%) patients. There was partial reperfusion of the aneurysm in three patients (14%) after 6 months, which necessitated repeated embolization. The clinical results were excellent in 13 patients, good in six, and fair in one. One patient died 2 months after the embolization due to pulmonary complications. A posterior cerebral artery was occluded in five (24%) patients; one of these patients developed a permanent neurologic deficit, one developed a transient neurologic deficit, and three had no clinical symptoms.
  
  
  CONCLUSIONS
  Endovascular treatment of a basilar tip aneurysm with Guglielmi detachable coils seems to be a safe and less invasive alternative to surgical clipping.
authors.affiliation: Department of Radiology, Karl-Franzens Medical School and University Hospital, Graz, Austria.
authors.forename: G E
authors.initials: GE
authors.lastname: Klein
authors.forename: D H
authors.initials: DH
authors.lastname: Szolar
authors.forename: K A
authors.initials: KA
authors.lastname: Leber
authors.forename: R
authors.initials: R
authors.lastname: Karaic
authors.forename: K A
authors.initials: KA
authors.lastname: Hausegger
mesh_terms: D000328:Adult; D000368:Aged; D015901:Angiography, Digital Subtraction; D001488:Basilar Artery / Q000000981:diagnostic imaging; D002533:Cerebral Angiography; D004621:Embolization, Therapeutic / Q000295:instrumentation* / Q000379:methods; D005260:Female; D006801:Humans; D002532:Intracranial Aneurysm / Q000000981:diagnostic imaging / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D015642:Radiology, Interventional