50-year-old female with NMO. Evaluate for PML. There are foci of FLAIR hyperintensity in the left posterior frontal deep white matter (series 701, image 59) as well as posterior to the left lateral ventricle (series 701, image 54) that are larger than on the previous exam. Please note that the imaging parameters are not the same which may account for a portion of the difference in size. There is no enhancement associated with these lesions. Subtle increased FLAIR hyperintensity along the lateral ventricular margin is more prominent on the right than on the left but has decreased bilaterally since the previous exam. The previously seen ependymal and subependymal enhancement has regressed. There is no abnormal intracranial enhancement. There are no new FLAIR lesions. The lesion in the left pons is not seen on today's exam.There is no evidence of intracranial hemorrhage or mass. 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, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
1.Increased size of periventricular T2 hyperintense lesions as described above. A portion of the size difference may be due to differences in imaging parameters. 2.The previously noted lesion in the pons is not seen. No new lesions are identified.3.Epididymal and subependymal enhancement has regressed. 4.Findings are compatible with the known diagnosis of NMO.5.No evidence of PML.