Female, 36 years old, history of multiple sclerosis, with paresthesias, assess for progression. Multiple small T2 hyperintense lesions are redemonstrated involving the subcortical and periventricular white matter as well as the corpus callosum itself. Many of these are linear and oriented radially with respect to the ventricles consistent with known demyelinating disease. There appears to be a new small lesion involving the right inferior aspect of the corpus callosum body which is not seen on prior study. There is minimal burden of T1 hypointense lesions. Brain parenchymal volume is maintained.Evaluation of the remainder of the brain with limited sequences demonstrates no intracranial mass or mass effect. No midline shift or herniation. No hydrocephalus. No extra-axial collections. There is an 11 x 6 mm T2 hyperintense lesion involving the right frontal bone, with questionable punctate focus of signal abnormality on the prior study in this location. Remainder of the calvarium and extracranial soft tissues are grossly unremarkable.
1. Findings consistent with known demyelinating disease with one new lesion involving the body of the corpus callosum since 7/14/2014.2. 11 x 6 mm T2 hyperintense lesion involving the right frontal bone which is new or significantly larger since prior study. Differential includes benign and aggressive processes. Consider CT for further evaluation.