Spontaneous Closure of Cerebral Dural Arteriovenous Fistulas with Direct Cortical Venous Drainage A Case Report

We describe two rare cases of spontaneous closure of cerebral dural arteriovenous fistulas (DAVFs) with a small nidus and draining directly m a single cortical vein with several ectasias.

Eighteen previously published cases of spontaneous closure of cerebral DAVF comprised more benign fistula types In literature, several explanations for DAVF occlusion have been proposed We hypothesize that, in addition to the known causes, the specific contrast medium used during the diagnostic selective angiography might have played a role in the thrombosis and subsequent fistula closure.