 This exam is degraded by motion artifact. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There are extensive confluent areas of T2 hyperintensity within the supratentorial white matter, most prominent within the parietal and occipital lobes, while also involving the posterior limbs of the internal capsules, the thalami, and basal ganglia. There are additional large patchy areas of T2 hyperintensity within the cerebellar white matter. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are grossly intact. The skull, paranasal sinuses, and scalp soft tissues are unremarkable.
1.Mildly decreased diffusion within the right thalamus and right occipital lobe may represent acute infarcts. 2.Extensive confluent signal abnormality within the supratentorial and infratentorial white matter as well as the thalami and basal ganglia is non-specific but has an appearance suggestive of posterior reversible encephalopathy syndrome (PRES). 