Lung cancer on treatment. There is no evidence of acute intracranial hemorrhage or infarct. There are scattered areas of T2 hyperintensity in the cerebral white matter, which are nonspecific. There are multiple unchanged punctate foci of susceptibility effect in the bilateral cerebral hemispheres. There is no evidence of acute infarction. There is diffuse cerebral and cerebellar volume loss. There is no midline shift or herniation. The skull and extracranial soft tissues are unremarkable. There are bilateral lens implants. There are bilateral mastoid air cell effusions.
Multiple unchanged punctate foci of susceptibility effect in the bilateral cerebral hemispheres appear to correspond to treated metastases.