Small cell lung cancer. Screening for IRB 15-1384. There is an inferior left cerebellar hemisphere enhancing lesion that measures up to 9 mm, an enhancing right superior cerebellar hemisphere lesion that measures up to 5 mm, and a left occipital lobe enhancing lesion that measures up to 3 mm. There is a mild degree of surrounding high T2 signal associated with these lesions. There is no evidence of intracranial hemorrhage or acute infarct. There is mild diffuse bilateral predominantly periventricular white matter T2 hyperintensity. There is diffuse susceptibility effect within the bilateral basal ganglia, which likely represents mineralization. There is no abnormal intracranial enhancement. There is mild diffuse cerebral volume loss. There is no midline shift or herniation. There is a 7 mm diameter leftward outpouching along the anterior communicating artery. There are multiple enhancing lesions within the skull and imaged portions of the cervical spine. The scalp soft tissues are grossly unremarkable. There are right maxillary sinus retention cysts. There are bilateral lens implants.
1. Subcentimeter supratentorial and infratentorial metastases with mild vasogenic edema, but no acute hemorrhage.2. Multiple osseous metastases.3. An anterior communicating artery aneurysm measures 7 mm in diameter. 