Multiple sclerosis. Paresthesias. Assess for disease progression. Compared to the previous examination, the extensive burden of multiple sclerosis lesions on both T1 and T2 sequences has not significantly changed, still most extensive in the frontoparietal periventricular white-matter but also with infratentorial involvement in the cerebellum and brainstem. A few of the lesions are now more conspicuous on FLAIR, such as a cortical lesion that involves the right paracentral lobule, but are stable on T1W imaging. This change in lesional conspicuity is most probably artifactual. There is no definite new brain lesion.The associated severe corpus callosal thinning and the moderate global brain volume loss remain unchanged.Retention cysts and mucosal thickening in the maxillary sinuses are unchanged.
The supratentorial and infratentorial involvement by multiple sclerosis has not significantly changed since the previous examination from December 2015, with extensive burden of T1 and T2 lesions, most pronounced in the frontoparietal white-matter as described above. There is no definite new brain lesion.