 There is redemonstration of numerous periventricular and subcortical T2/FLAIR hyperintense white matter lesions in the supratentorial and infratentorial brain parenchyma. There are also lesions involving the medulla and left middle cerebellar peduncle and cervicomedullary junction. Some of these lesions are better visualized on the current exam probably due to imaging on 3 Tesla MRI as compared to 1.5 Tesla prior. The lesions overall remain unchanged from the previous study and no new lesions are seen. 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.Normal flow-voids are demonstrated in the major intracranial vascular structures. There is mild mucosal thickening in the bilateral ethmoid air cells and right maxillary sinus.
Multiple T2/FLAIR hyperintense white matter lesions in the supratentorial and infratentorial brain parenchyma without significant interval changes from the previous exam. No new lesions seen.