Small cell lung cancer. There are multiple solidly and peripherally enhancing supratentorial and infratentorial lesions. For example, the largest in the right cerebral hemisphere is located in the inferior parietal lobe and measures up to 38 mm, the largest in the left cerebral hemisphere is located in the left precentral gyrus region and measures up to 26 mm, and the largest infratentorial lesion is located in the left cerebellar hemisphere and measures up to 26 mm. A few of the lesions display mild surrounding vasogenic edema, but there is no midline shift or herniation. There is a chronic infarct in the right basal ganglia and corona radiata. There is no evidence of intracranial hemorrhage or acute infarct. There is mild diffuse cerebral volume loss. The major cerebral flow voids are intact. The orbits are grossly unremarkable. There are secretions and mucosal thickening throughout the left maxillary sinus. There is a mildly expansile enhancing lesion in the left frontal bone that measures up to 26 mm and displays slight epidural and subgaleal extension.
1. Numerous supratentorial and infratentorial metastases without midline shift or herniation.2. Left frontal bone metastasis.3. Chronic lacunar infarct in the right basal ganglia and corona radiata.