Endovascular treatment of vein of Galen dural arteriovenous fistula presenting as dementia.

Dural arteriovenous fistula (DAVF) is an important cause of neurological dysfunction that is often misdiagnosed, especially in elderly population. Galenic DAVFs are a subtype of the rare falcotentorial DAVFs with a high risk of hemorrhage and aggressive clinical course. In most cases, DAVFs present with pulsatile tinnitus, headache, or orbital symptoms such as chemosis and proptosis. We report a patient with DAVF of Vein of Galen presented with progressive dementia, treated by Onyx embolisation and had good clinical outcome.