case_images: PMC4395961_01
case_images: T2-weighted coronal, (a) three-dimensional time of flight (3DTOF) arterial magnetic resonance (MR) image and (b) 3DTOF venous MR imaging (c and d) about 3 x 3 cm size flow void in left fronto-parietal lobe suggestive of venous aneurysm, which is fed by single arterial feeder from left middle cerebral artery and drained by two predominant dilated venous channels to superior sagittal sinus
case_images: JPN-10-85-g001.jpg
case_images: PMC4395961_01_JPN-10-85-g001.jpg
case_images: F1
case_images: The magnetic resonance (MR) imaging angiography of brain showed about 3 x 3 cm size venous aneurysm in left fronto-parietal lobe with multiple varicose venous channels draining to dilated superior sagittal sinus with a single arterial feeder from dilated left middle cerebral artery (MCA) as shown in Figure 1.
case_images: Picture showing excised arteriovenous fistula with ligated MC feeder and draining veins
case_images: JPN-10-85-g002.jpg
case_images: PMC4395961_01_JPN-10-85-g002.jpg
case_images: F2
case_images: Then the whole venous varix along with cut end of feeding artery and draining vein was taken out [Figure 2].
case_images: Postoperative three-dimensional time of flight arterial (a) and venous (b) magnetic resonance imaging showing nonvisualization of arteriovenous fistula and venous aneurysm
case_images: JPN-10-85-g003.jpg
case_images: PMC4395961_01_JPN-10-85-g003.jpg
case_images: F3
case_images: Postoperative MR angiogram showed absence of AVF and residual postoperative chronic hemorrhage in the left fronto-parietal lobe [Figure 3].