Male, 44 years old, with gait disorder, ataxia, multiple sclerosis. Multiple FLAIR hyperintense lesions are redemonstrated primarily involving the periventricular white matter. Hyperintense signal is particularly notable and nearly confluent along the atria, left side more than right. Lesions are also evident within the pons and at the superior and middle cerebellar peduncles. No new or growing lesions are seen. Several lesions, including those along the right lateral ventricle and in the right middle cerebellar peduncle, appear to have decreased in size when compared to the prior examination. No pathologic enhancement is seen. No edema or mass effect is detected. No abnormal extra-axial collections are noted. Ventricular size and morphology are within normal limits.
Multiple lesions are demonstrated compatible with demyelinating disease. No new or growing lesions are seen, and in fact, several lesions appear to have decreased in size.