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There is a well-circumscribed, expansile lesion which appears to be centered at the lateral aspect of the left lateral ventricle that displays margins of heterogeneous, thickened enhancement and central areas of cystic necrotic changes.
There is restricted diffusion within the splenium of the corpus callosum. Note is also made of T2 prolongation along the ependymal lining of both lateral ventricles, likely reflecting transependymal flow of CSF secondary to hydrocephalus.
There is focal midline shift to the right, without evidence of uncal herniation.