Overview
Dural arteriovenous fistulas (abnormal passageways between arteries and veins) may occur anywhere in the body. Dural arteriovenous fistulas occur in the dura mater, the tough fibrous membrane that envelops the brain and spinal cord outside the arachnoid and the pia mater (the other layers of membrane that protect the brain and spine.)
Diagnosis
Some patients with dural arteriovenous fistulas hear noises that have no origin, their ears ring, or they have headaches or strokelike symptoms or seizures. Others have no symptoms.
Treatment
Large dural arteriovenous fistulas usually require treatment, which may include endovascular embolization (closure of the fistula from inside the blood vessel) or surgery to block the abnormal channel.
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