Figure 2d. Complication associated with subdural hematoma from TVE. (a) Left external carotid arteriogram shows a transverse sinus dural AVF fed by the left occipital, superficial temporal, and middle meningeal arteries. The AVF drains into the left jugular vein and cortical veins. (b) Left internal carotid arteriogram shows two dural AVFs (arrows) fed by the left ascending pharyngeal artery and the meningohypophyseal artery, respectively. The AVFs drain into the superior petrosal sinus (arrowheads). (c) Fluoroscopic image obtained during placement of a coil into the superior venous pouch contiguous with the superior petrous sinus demonstrates that the distal edge of the coil did not form a loop (arrow). As a result, the coil probably penetrated the venous wall. The transverse sinus and inferior venous pouch around the superior petrous sinus were already packed with coils. (d) Computed tomographic (CT) scan obtained 1 day after embolization shows a subdural hematoma at the left cerebral convexity and the falx. The patient complained of headache for a few days but fortunately did not have any neurologic symptoms. (e) Follow-up angiogram of the left external carotid artery shows complete obliteration of the transverse-sigmoid sinus dural AVF. (f) Left internal carotid arteriogram shows complete obliteration of the dural AVFs involving the superior petrosal sinus.