The Dural AV-Fistula (DAVF), the Most Frequent Acquired Vascular Malformation of the Central Nervous System (CNS)

Acquired arteriovenous malformations, such as is the case with dural arteriovenous fistulae (DAVF), are the consequence of a pathological new arterial ingrowth into venous spaces that reaches directly the venous lumen, without interposition of a capillary network, thereby creating an AV-shunt.