 There are numerous periventricular, subcortical, cortical, and corpus callosum lesions showing abnormal T2 signal intensity that appear similar compared to prior examination given differences in technique. Some lesions demonstrate low T1 signal intensity. No new lesions are definitively identified.The ventricles and sulci are within normal limits. The basal cisterns remain patent. There is no midline shift or mass effect. There is no diffusion abnormality. No extra-axial fluid collection is identified. The midline structures and craniocervical junction are within normal limits. Several left parietal lobe sulci demonstrate susceptibility effect, which could represent hemosiderin staining from prior hemorrhagic event or perhaps just prominent vasculature.
No definitive evidence of white matter disease progression given differences in technique.