Secondary malignant neoplasm of brain and spinal cord [198.3], Reason for Study: ^Reason: 61 yo F with metastatic thyroid cancer to brain s/p resection, eval for cavity size. Previously seen left parietal lobe precuneus intra axial mass has been resected.There is localized hemosiderin deposition on the resection cavity.On Gadolinium enhanced images, thin peripheral enhancement was seen following the resection cavity which likely represent reactive enhancement but cannot completely exclude possibility of residual lesion.About 6mm sized nodular enhancing lesion on the left putamen is again seen, no change since prior scan in terms of size and enhancing pattern.About 3mm sized right inferior frontal gyrus area lesion just above the fronto-marginal sulcus appears to be stable. The lesion appears to be within the right front-marginal sulcus but could be an intra axial lesion located on the cortex, The ventricles, sulci and cisterns are symmetric and unremarkable. Normal flow voids are identified in the major intracranial vessels. The paranasal sinuses and mastoid air cells are clear.
1. Interval resection status of the left posterior parietal lobe, precuneus lesion since prior scan.2. No change of left putamen and right inferior frontal lobe enhancing lesions since prior scan.