 This exam is mildly degraded by motion artifact. There is no evidence of intracranial hemorrhage or acute infarct. There is unchanged ill-defined subtle somewhat linearly configured T2 hyperintensity within left parietal white matter as well as within the white matter adjacent to both occipital horns, greater on the right. There are no additional areas of abnormal parenchymal signal; specifically no juxtacortical or infratentorial white matter lesions.The ventricles and basal cisterns are normal in size and configuration. There is a prominent extra-axial CSF space within the anterior left temporal fossa that likely represents an arachnoid cyst, with mild localized mass effect. There is no diffusion restriction. There is no midline shift or herniation. The major cerebral flow voids are intact.
1.Stable signal abnormality within the left periatrial and right greater than left occipital periventricular white matter. The appearance is nonspecific with differential diagnosis including primarily gliosis perhaps from prior infection/inflammation or ischemia, and demyelinating disease. Due to multiplicity of findings and stability, neoplastic process is felt to be unlikely.2.Left anterior temporal fossa presumed small arachnoid cyst with mild localized mass effect.