Secondary malignant neoplasm of brain [C79.31], Reason for Study: ^Reason: 57F with metastatic NSCLC with brain mets s/p WBRT and SRS (thought to be curative) here with diffuse weakness of LE and difficulty walking x1 week Redemonstration of tumor resection areas especially on the right temporoparietal and right cerebellar hemisphere with the surrounding FLAIR/T2 high signal intensity, unchanged since prior scan.Confluent FLAIR/T2 high signal intensities on bilateral periventricular white matter and centrum semiovale indicating nonspecific small vessel ischemic disease, unchanged.The ventricles, sulci and cisterns are unremarkable except ex vacuo changes of the right lateral ventricle, unchanged since prior scan. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia. The paranasal sinuses and mastoid air cells are clear.
1. No evidence of acute ischemic or hemorrhagic lesion.2. Unchanged postoperative changes of the right parieto-temporal and right cerebellar hemisphere since prior scan.3. Unchanged non specific small vessel ischemic disease.