Reason: brain metastasis, status post whole brain radiotherapy. There are several supratentorial and infratentorial lesions, which have decreased in size. For example, a lesion located along the right prefrontal gyrus measures approximately up to 9 mm, previously 14 mm, a left anterior temporal lobe lesion measures 6 mm, previously 12 mm, a right midline temporal gyrus lesions measures 7 mm, previously 10 mm, and a medial right cerebellar hemisphere lesion measures2 mm , previously 6 mm. Additional subcentimeter foci of abnormal enhancement are present along the inferior right temporal lobe, anterior left temporal lobe, posterior left parietal lobe, and bilateral cerebellar hemispheres. There are scattered areas of abnormal high T2 signal within the cerebral and pontine white matter, which likely represent chronic small vessel ischemic disease, but no evidence of acute infarction. There is also patchy high T2 signal within the pons, greater on the right. There are nonspecific punctate foci of susceptibility effect along the left sylvian fissure. There is mild cerebral parenchymal volume loss. There appears to be a small right sigmoid sinus diverticulum. The orbits, skull, paranasal sinuses, and scalp soft tissues are otherwise grossly unremarkable.
Multiple intracranial enhancing lesions have decreased in size.