Abstract
Traumatic dural arteriovenous malformation (AVM) is a rare cerebral vascular disease. Traumatic dural AVM fed by cortical artery has rarely been reported so far in the literature. A 57year-old male developed bruit, thrill and tenderness over the injured region about a year after he had been hit on the occipital region of the head. A linear skull fracture was found to cross over the transverse sinus and a dural AVM in the region of the transverse sinus was detected angiographically. It was considered that this dural AVM was traumatic. Postoperatively, the cortical arteries became feeders of the AVM, so that pure dural AVM changed to mixed pial-dural AVM. The mechanism by which a cortical artery became a feeder of AVM might be that the “rete mirabile” artery started as a channel to the nidus in reverse direction.
