Fistula and Infratentorial Location, Characteristics That Contribute to Cerebral Arteriovenous Malformations, Lead to the Formation of Associated Aneurysms in Patients

Patients with cAVMs and AA who harbor a fistula or an infratentorial location tend to form AAs. To prevent recurrent AAs and decrease the subsequent risk of hemorrhage, complete obliteration of cAVMs or retrograding over 80% size of cAVMs is recommended.