 There is redemonstration of multiple oval T2/FLAIR hyperintense lesions in the periventricular and subcortical white matter as well as scattered along the corpus callosum which are similar in distribution, many perpendicular to the long axis of lateral ventricle. Many of the lesions also demonstrate corresponding T1 hypointensity. No definite new focus of abnormal signal is appreciated.The ventricles and sulci are normal in appearance. There is a CSF signal intensity lesion in the supracerebellar cistern resulting in flattening of the superior margin of the cerebellum. It currently measures 2.2 cm transverse x 2.8 cm AP x 2.4 cm CC, essentially unchanged.
1.Similar pattern of scattered foci of T2/FLAIR hyperintensity within the white matter consistent with known demyelinating disease, including a left brachium pontis lesion. Overall, there is mild to moderate T1 and moderate T2 burden of disease.2.Stable CSF signal intensity structure with mild mass effect upon the superior cerebellum, which is statistically most likely an arachnoid cyst.