Dural arterio-venous Fistulas

Dural arteriovenous fistulas (dAVF) are acquired vascular malformations that occur at the level of the meninges (dura). They are short-circuit connections between arteries and veins. Blood flows with high arterial pressure into the draining veins, which are overloaded and may burst. The course of the disease depends on the type of venous drainage. Venous drainage also determines the risk of bleeding. For example, if drainage occurs directly through cerebral veins, there is a high risk of cerebral hemorrhage. In this case, the dural fistula should be treated quickly.

A dural fistula can develop after a skull injury or thrombosis of a venous blood vessel in the brain. In most cases, however, the cause cannot be determined with certainty.

Further Information

Case presentation