 There is chronic loss of white matter volume with associated gliosis bilaterally, most notable involving frontoparietal and parietal lobes, associated with ex vacuo dilatation of the lateral ventricles as well as thinning of the corpus callosum. The cerebellar tonsils are in normal position. There are no masses, mass effect or midline shift. The pituitary gland is normal in size. There is no evidence for intracranial hemorrhage or acute cerebral, brainstem or cerebellar infarction. No diffusion-weighted abnormalities are identified. There are no extraaxial fluid collections or subdural hematomas. Flow voids are present within the major vessels indicating patency. Fluid is present within a few paranasal sinuses as well as pooling within the nasopharynx, consistent with intubation. There is no abnormal enhancement within the brain.
1.There is chronic loss of white matter volume with associated gliosis bilaterally, most notable involving frontoparietal and parietal lobes, associated with ex vacuo dilatation of the lateral ventricles as well as thinning of the corpus callosum from remote ischemia.2.No Chiari malformation.