No evidence of dissection or thrombus within the carotid arteries or vertebrobasilar system. Normal appearance of the circle of Willis. No aneurysm identified. Fenestrated right A2 origin.
The previously identified cortical vein (vein of Trolard) within the left frontoparietal region demonstrates no contrast enhancement in keeping with thrombosis. Normal contrast enhancement within the dural venous sinuses and internal cerebral veins.