Endovascular treatment of isolated transverse sigmoid sinus dural arteriovenous fistula using Onyx liquid embolic system

A dural arteriovenous fistula (DAVF) with isolated sinus exists in a network of small vessels opening into the wall of a completely thrombosed sinus that disallows any venous access, either anterograde or retrograde. Despite recent advances in treatment modalities, including endovascular and neurosurgical approaches, some patients with DAVFs with isolated sinus are difficult to treat both anatomically and clinically [5-7]. In this paper, we report initial five isolated transverse-sigmoid sinus DAVFs treated transarterial embolization using Onyx.