Multiple sclerosis. There are multiple, greater than 10, T2 hyperintense white matter lesions, primarily in a periventricular distribution. There is no evidence of intracranial hemorrhage, mass, or acute infarct. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable. There is scattered paranasal sinus mucosal thickening.
No significant interval change in the intracranial demyelinating lesions, accounting for differences in technique.