“…22,23,27,32,34,35,39,46,48,49 Third, the natural history of DAVFs depends greatly on the presence or absence of CVD. Although the association between CVD and presentation with symptoms of ICH or NHND has long been appreciated, 1,3,6,11,13,15,16,25,36,48 only in the past decade has it become clear that CVD also increases the risk of subsequent neurological events. 16,48 Appropriately, the importance of CVD has been reflected in the angiographic classification systems of Borden and This article presents a modification to the existing classification scales of intracranial dural arteriovenous fistulas based on newly published research regarding the relationship of clinical symptoms and outcome.…”