45-year-old female with multiple sclerosis. There are scattered foci of increased T2 signal within the supratentorial periventricular, pericallosal and subcortical white matter, which overall do not appear significantly changed from the prior examination. However, a single area of increased T2 signal along the atrium of the right lateral ventricle appears to have increased in size from the prior examination (series 801/21). Focus of increased signal in the left anterior frontal lobe was not definitely seen on the prior examination, although this may be related to differences in technique. Several of these lesions show mild correlative T1 hypointensity, including the lesion in the left centrum semiovale along the right ventricular atrium as well as the temporal stem. The other lesions do not demonstrate significant associated T1 hypointensity.There is no evidence of intracranial hemorrhage or acute infarct. There is an unchanged T1 hypointense T2 hyperintense focus in the posterior pituitary suggestive of a Rathke's cleft cyst. There is prominence of the lateral ventricles, particularly the atria, consistent with parenchymal volume loss. There is no midline shift or herniation. The major cerebral flow voids are intact. Left maxillary mucus retention cyst. The orbits, skull, and scalp soft tissues are grossly unremarkable.
Suspected increase in size of a T2 hyperintense lesion along the atrium of the right lateral ventricle, but otherwise grossly unchanged findings consistent with supratentorial demyelinating disease.