Female, 36 years old, with MS, f/u progression. Numerous lesions are redemonstrated involving the corpus callosum, periventricular and subcortical white matter both supra- and infratentorially. These show a morphology consistent with demyelination.Since the prior examination, a prominent lesion within the left cerebellum/middle cerebellar peduncle has decreased in size. A prior lesion within the left parietal subcortical white matter is also decreased in size. However, some lesions have increased in size or are new including one in the left frontal subcortical white matter (image 19 series 801), and two within the right cerebellum (image 8 series 8 a one). Most of the numerous additional lesions are unchanged.The corpus callosum is mildly thinned but brain parenchymal morphology is otherwise unremarkable. No evidence of significant mass effect is seen. No intracranial hemorrhage is suspected. There are no abnormal extra-axial collections and the ventricles are normal in size and morphology.
Most of the numerous white matter lesions, compatible with the history of multiple sclerosis, are unchanged. However, at least two lesions seen on the prior examination have improved in terms of size and conspicuity, and three lesions are either new or increased in size.