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Large nidus of malformed vessels, as evidenced by serpiginous (bag of worm) appearance and signal (flow) void in T2 weighted images, is seen involving the right parieto-occipital region. Although large, no mass effect is detected.
Arterial supply derived from right posterior and middle cerebral arteries.
Venous drainage to the cortical veins and right internal cerebral vein.
No hemorrhage is detected.