Teaching NeuroImages: Susceptibility-weighted MRI: First clue to DAVF complicating sinovenous thrombosis

A 61-year-old man with factor V Leiden thrombophilia presented with hemorrhage and transverse sinus thrombosis (figure, A). Four years later, he developed worsening aphasia, new hemorrhage, and hemispheric edema (figure, B). Susceptibility-weighted imaging (SWI) showed bright signal in the straight sinus (figure, C). A dural arteriovenous fistula (DAVF) was diagnosed (figure, D). The brain edema improved (figure, E) and SWI sinus hyperintensity resolved after endovascular disconnection of the fistula (figure, F).

Source: Neurology - May 20, 2013 Category: Neurology Authors: Kalra, V. B., Malhotra, A., Matouk, C. C. Tags: MRI, All Cerebrovascular disease/Stroke, Arteriovenous malformation, Cerebral venous thrombosis RESIDENT AND FELLOW SECTION Source Type: research