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Figure 2: A 54-year-old man who had chronic headaches. The right external carotid artery (a) and the left vertebral artery (b) angiograms showing a dural AVS of the tentorial with large venous pouch fed by the right middle meningeal and left posterior auricular arteries. The right external carotid artery (c) and the left vertebral artery (d) angiograms after Onyx embolization revealing complete obliteration of the fistula. (e), sagittal MRI scan, T2-weighted, demonstrating precentral vein (arrow) and venous pouch thrombosis and mesencephalic edema

Figure 2: A 54-year-old man who had chronic headaches. The right external carotid artery (a) and the left vertebral artery (b) angiograms showing a dural AVS of the tentorial with large venous pouch fed by the right middle meningeal and left posterior auricular arteries. The right external carotid artery (c) and the left vertebral artery (d) angiograms after Onyx embolization revealing complete obliteration of the fistula. (e), sagittal MRI scan, T2-weighted, demonstrating precentral vein (arrow) and venous pouch thrombosis and mesencephalic edema