Multiple sclerosis [G35], Reason for Study: ^Reason: MS, f/u progression History: paresthesias Multifocal bihemispheric FLAIR white matter high signal intensity lesions are again seen.In particular, left left periventricular and centrum semiovale lesion shows relatively homogeneous signal intensity comparing to prior which showed slightly inhomogenous pattern. In addition, bilateral internal capsule lesions are not as conspicuous as they were on prior scan. These changes may reflect changes of disease activity.However, considering images were obtained from different MR machine (previously 3 T but this one was performed in 1.5T), these findings may not represent actual interval change.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift. The midline structures and cranial-cervical junction are normal. The mastoid air cells are clear.Right maxillary sinus shows retention cyst which appears to be slightly bigger than before.There is another small retention cyst on the left side.
No significant interval change of multiple various size bihemispheric white matter lesions considering different magnet strength since prior scan.