Metastatic squamous cell carcinoma of the lung: AMS. There is interval increase in size a right precentral gyrus lesion now measures up to 7 mm, previously 4 mm. In addition, there are several newly apparent bilateral brain metastases. There is also interval increase in size of the left frontal bone metastasis with epidural extension. There is an unchanged background of mild cerebral white matter T2 hyperintensity, which may represent chronic small vessel ischemia and a chronic left caudate lacunar infarct. There is no evidence of intracranial hemorrhage or acute infarct. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. There is a chronic right lamina papyracea fracture. There is fluid in the right mastoid air cells.
1. Interval progression of the brain metastases.2. Increase in size of the left frontal bone metastasis with epidural extension.