Secondary malignant neoplasm of brain [C79.31] / Secondary malignant neoplasm of other parts of nervous system [C79.49], Reason for Study: ^Reason: metastatic NSCLC with brain mets s/p SRS; assess for stability History: stability Redemonstration of enhancing nodules at bilateral cerebellar hemispheres, right posterior aspect of the pons and left occipital lobe, unchanged in terms of size since prior scan.Previously described right inferior parietal lobule and left inferior parietal lobule lesions are not as conspicuous as prior.There is no new abnormal enhancing lesion.There is no evidence of acute ischemic or hemorrhagic lesion.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Multifocal enhancing lesions involving bilateral cerebellar hemispheres, pons and right occipital lobe as described above, unchanged since prior scan.2. No evidence of acute ischemic or hemorrhagic lesion.3. Previously reported bilateral inferior parietal lobule enhancing nodules are not as conspicuous as prior.4. No evidence of new abnormal enhancing lesion.