Association of two saccular aneurysms of the posterior inferior cerebellar artery with a cerebellar arteriovenous malformation fed by the same artery. Case report.

Coexistence of posterior fossa aneurysms and AVMs on the same feeding artery is very rare; the case of an association of two saccular aneurysms of the posterior inferior cerebellar artery with a cerebellar arteriovenous malformation of the same artery is reported. Theories concerning etiology are reported as well.