Wedge-shaped clump of variable hyperintense signal is noted in anterior body of right lateral ventricle.
Serpiginous collection flow voids is identified along upper margin of posterior body of corpus callosum, producing bag of worms appearance, covering an area measuring 2 x 1.5 cm. Posterior body of corpus callosum is comparatively thinner than its other parts.
After administration of I/V contrast—
No abnormal enhancement is noted in brain parenchyma.
Contrast material is identified inside right lateral ventricle.
Feeding artery to the bag of worms is identified arising from A3 segment of right anterior cerebral artery (ACA), and draining vein is identified as posterior callosal vein. The bag of worms also communicates with intraventricular veins through perforating veins traversing across posterior body of corpus callosum.