Postoperative de novo epilepsy after resection of brain arteriovenous malformations: a national database study of 536 patients.

This analysis of 536 patients provides evidence that de novo epilepsy after brain AVM resection occurs at a one-year cumulative incidence of 13.8%, with a total of 19.4% developing de novo epilepsy. Intracerebral hemorrhage was inconsistently associated with postoperative de novo epilepsy. De novo epilepsy was significantly less frequent after AVM diagnosis without resection.