Lung cancer on chemotherapy now: dizziness. There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is mild scattered cerebral white matter T2 hyperintensity. There is also a punctate focus of T2 hyperintensity in the right basal ganglia. There is no abnormal intracranial enhancement. There is mild diffuse cerebral volume loss. There is no midline shift or herniation. The major cerebral flow voids are intact. The skull and scalp soft tissues are grossly unremarkable. There are small retention cysts in the left frontoethmoid recess and sinus. There are bilateral lens implants.
1. No evidence of intracranial metastases. 2. Probable chronic small vessel white matter ischemic disease and right basal ganglia lacunar infarct, but no evidence of acute infarcts.