Congenital glioblastoma

There is a heterogeneously enhancing, lobulated mass with intratumoral cysts presumably arising from the left frontal horn. The solid component demonstrates restricted diffusion, consistent with hypercellularity. The mass extends across the midline and compresses the right frontal horn. The mass extends into the left greater than right anterior cranial fossa and left middle cranial fossa. Inferiorly, the mass causes mass effect and protrudes into the third ventricle. There are multiple intratumoral cysts suspected to contain blood products and proteinaceous material. The largest cyst measures 2.2 cm in the region of the right frontal horn. Anteriorly, the mass extends into the interhemispheric fissure and causes significant mass effect on the left frontal lobe. There is a large CSF space in the left anterior and middle cranial fossa, which likely represents porencephalic cysts in the left frontal lobe, which are displaced anteriorly and inferiorly. There may also be a superimposed arachnoid cyst in the left middle cranial fossa.

There is minimal hemorrhage layering in the occipital horns of the ventricles and enlargement of the ventricular system, particularly the lateral and third ventricles. The fourth ventricle is relatively normal in size. There is Wallerian degeneration in the left cerebral peduncle.

The anterior cerebral arteries are partially encased and displaced anteriorly by the mass. No narrowing of the anterior cerebral arteries. The left middle cerebral artery is displaced posteriorly and inferiorly. The middle cerebral arteries are patent.