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Figure 2: (a-b) Anteroposterior and lateral projections of left internal carotid artery injections showing pericallosal branches feeding a right fronto-parietal arteriovenous fistula with venous angiomata draining into SSS. (c-d) Right internal carotid artery anteroposterior and lateral projections show large venous varix fed by right middle cerebral artery branches. (e-g) Super selection of left pericallosal artery and onyx injection followed by anteroposterior skull XR of onyx case. (h) T2 axial magnetic resonance imaging after right parietal craniotomy for evacuation of hematoma and arteriovenous fistula resection showing reduced mass effect. (i-j) Left vertebral artery injection anteroposterior projection demonstrating right P3 segment of posterior cerebral artery feeding temporal arteriovenous fistula followed by super-selection and onyx embolization of this branch. (k) Right internal carotid artery injection after coils placed and subsequent onyx embolization of venous varix. (l) 6 month post treatment lateral projection demonstrating complete obliteration of large pial arteriovenous fistula and associated varix

Figure 2: (a-b) Anteroposterior and lateral projections of left internal carotid artery injections showing pericallosal branches feeding a right fronto-parietal arteriovenous fistula with venous angiomata draining into SSS. (c-d) Right internal carotid artery anteroposterior and lateral projections show large venous varix fed by right middle cerebral artery branches. (e-g) Super selection of left pericallosal artery and onyx injection followed by anteroposterior skull XR of onyx case. (h) T2 axial magnetic resonance imaging after right parietal craniotomy for evacuation of hematoma and arteriovenous fistula resection showing reduced mass effect. (i-j) Left vertebral artery injection anteroposterior projection demonstrating right P3 segment of posterior cerebral artery feeding temporal arteriovenous fistula followed by super-selection and onyx embolization of this branch. (k) Right internal carotid artery injection after coils placed and subsequent onyx embolization of venous varix. (l) 6 month post treatment lateral projection demonstrating complete obliteration of large pial arteriovenous fistula and associated varix