Thyroid cancer with metastasis to the brain. Evaluate for change.. Postsurgical changes related to lesion resection in the left parietal lobule are again seen. There is stable dural thickening, mild T2 hyperintensity and hemosiderin staining in the resection bed as on the previous exams but no evidence of enhancing tumor in the resection cavity. Again seen is a 5 mm enhancing lesion with susceptibility artifact in the left superior parietal lobule (series 1102, image 152), a 3 mm focus of enhancement in the left precentral gyrus (series 1102, image 154), and minimal enhancement in the left inferior temporal lobe with associated blooming artifact (series 1102, image 71). The previously seen vague focus of enhancement in the right middle frontal gyrus has no definitive enhancement (series 1102, image 148). The focus of susceptibility along the right caudate head has no associated enhancement and is unchanged. There are no new areas of abnormal enhancement or susceptibility artifact. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. Mucous retention cysts are seen within the bilateral maxillary sinuses. There is opacification and mucosal enhancement of the majority of the ethmoid air cells and mild mucosal thickening in the left frontal sinus. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable.
1.Stable postoperative changes related to left inferior parietal lobule metastasis resection. No evidence of residual or recurrent tumor in the resection bed.2.Stable small enhancing foci in the left superior parietal lobule and left precentral gyrus. The previously seen metastatic lesion in the left inferior temporal lobe demonstrates only faint enhancement compatible with treated metastasis. The lesion in the right middle frontal gyrus no longer enhances. No new intracranial lesions are identified.