title: Extradural aneurysms.
abstract: Extradural aneurysms have distinct characteristics from their intradural counterparts. Most extradural aneurysms cannot be treated by direct surgical exposure and clip ligation or by direct endovascular means without parent vessel sacrifice. Arterial occlusion with or without bypass grafting remains the traditional treatment. Controversy about the "best" or "proper" technique of arterial balloon test occlusion is rivaled only by that of the necessity for bypass grafting when apparent tolerance for arterial occlusion has been demonstrated.
authors.affiliation: Department of Radiology, Pennsylvania State University, Milton S. Hershey Medical Center, Hershey, Pennsylvania 17033, USA.
authors.forename: J D
authors.initials: JD
authors.lastname: Barr
authors.forename: B P
authors.initials: BP
authors.lastname: Holmes
authors.forename: K A
authors.initials: KA
authors.lastname: Edgar
mesh_terms: D000783:Aneurysm / Q000601:surgery* / Q000628:therapy; D002340:Carotid Artery Diseases / Q000601:surgery* / Q000628:therapy; D017536:Carotid Artery, Common / Q000601:surgery; D002343:Carotid Artery, Internal / Q000601:surgery; D002560:Cerebrovascular Circulation; D003097:Collateral Circulation; D004388:Dura Mater; D004621:Embolization, Therapeutic / Q000295:instrumentation / Q000379:methods; D006801:Humans; D008026:Ligation; D012039:Regional Blood Flow; D012501:Saphenous Vein / Q000637:transplantation