 There is no evidence for intracranial hemorrhage or diffusion-weighted abnormalities. Redemonstration of the right ACA and MCA territory encephalomalacia compatible with prior infarct. Scattered susceptibility artifact in the areas of MCA territory infarct compatible with hemosiderin deposition. There is also hyperintensity of the subcortical and periventricular white matter compatible with chronic small vessel ischemic disease. There is ex vacuo dilatation of the right lateral ventricle. Generalized cerebral volume loss. The white matter of the corpus callosal body is symmetrically thin, possibly developmental.There are no masses or midline shift. Redemonstration of focal prominence of CSF signal intensity in the midline along the posterior aspect of the posterior fossa which may represent a retrocerebellar cyst versus less likely mega cisterna magna, with mild mass effect upon the cerebellar hemispheres. There are no pathologic extraaxial fluid collections. Flow voids are present within the major proximal anterior vessels indicating patency. There is slight paucity of flow voids in the distal right MCA vessels on the right, compatible with known areas of chronic infarct. The basilar and vertebral flow voids are present but diminutive in size, likely developmental. Mucous retention cyst in the right maxillary sinus. Scattered bilateral ethmoid air cell opacity.
1.No evidence of acute ischemia or hemorrhage.2.Redemonstration of prior ischemia with extensive encephalomalacia of right ACA and MCA.3.Incidental retrocerebellar cyst versus less likely mega cisterna magna.