Hemorrhagic complications after endovascular treatment of cerebral arteriovenous malformations.

Background And Purpose: Intracranial hemorrhage is the most severe complication of brain arteriovenous malformation treatment. We report our rate of hemorrhagic complications after endovascular treatment and analyze the clinical significance and potential mechanisms, with emphasis on cases of delayed hemorrhage after uneventful embolization.

Materials And Methods: During a 10-year period, 846 embolization procedures were performed in 408 patients with brain AVMs.