Secondary malignant neoplasm of brain [C79.31], Reason for Study: ^Reason: 52 yo M with metastatic NSCLC to brain s/p SRS to cerebellar, right occipital, and right superior parietal lesions; eval other lesions History: none The left inferior frontal lobe lesion adjacent to anterior orbital gyrus lesion appears to be slightly smaller than prior scan ( 10 x 6mm to 8.1 x 5mm). The left cerebellar lesion also shows slightly decrease its size (10 x 10mm to 7x 7.6mm) since prior scan.Subtle enhancing lesion on the right occipital cortex and right superior parietal lobule lesion do not show any significant interval change since prior scan in terms of enhancement pattern, maximum diameter and other MR characteristics since prior scan.There is no new lesion on FLAIR/T2 weighted images and no evidence of new enhancing lesion on this scan. The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, 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 are clear.Partial opacification of the right mastoid air cells.
1. Interval decrease in size of non-enhancing lesions including left frontal inferior frontal gyrus and left cerebellar hemisphere since prior scan.2. No change of minimally enhancing lesions on the right occipital lobe and right parietal lobe superior parietal lobule since prior scan.3. No evidence of new lesion. No evidence of new abnormal enhancement.