Multiple sclerosis [G35], Reason for Study: ^Reason: MS; eval for progression History: paresthesias There are multiple new FLAIR/T2 high signal intensity white matter lesions comparing to prior scan. Those lesions are located at the left inferior frontal lobe, left posterior inferior subinsular white matter and left periventricular white matter especially along the occipital horn of the left lateral ventricle.There is no evidence of acute ischemic or hemorrhagic lesion on the scan.Other bihemispheric white matter lesions including periventricular white matter and bilateral corpus callosum consistent with demyelinating disease such as multiple sclerosis appear to be stable, unchanged.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, or restricted diffusion/acute ischemia. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Interval development of new white matter lesions especially on the left hemisphere as described above comparing to prior scan.2. Grossly unchanged other white matter lesions which are consistent with multiple sclerosis.3. No evidence of acute ischemic or hemorrhagic lesion.