Thyroid cancer with metastatic brain lesions: three-month follow-up. There are postsurgical findings related to left parietal metastasectomy. There is adjacent dural thickening and blood products, but no evidence of enhancing tumor in the resection cavity. There is a 2 mm diameter enhancing lesion with susceptibility effect in the left superior parietal lobule, previously 3 mm. There is also a 2 mm focus of enhancement in the right middle frontal gyrus and right medial orbitofrontal gyrus, previously 3 mm. There is am unchanged non-enhancing subcentimeter nodular focus of susceptibility effect along the ependymal surface of the right caudate head. There is no evidence of new intracranial lesions, intracranial hemorrhage, or acute infarct. The pituitary gland appears unremarkable. Multiple foci of T2 hyperintensity in the bilateral cerebral white matter are nonspecific, but compatible with chronic small vessel ischemic disease. The ventricles and basal cisterns are unchanged in size. There is no midline shift or herniation. The major cerebral flow voids are intact. There is mild mucosal thickening involving the anterior ethmoid air cells and bilateral mucous retention cysts of the maxillary sinuses, right greater than left. The orbits are grossly unremarkable.
1. Subcentimeter left parietal lobe and right frontal lobe lesions appear to have slightly decreased in size. 2. The non-enhancing subcentimeter nodular lesion along the ependymal surface of the right caudate head is unchanged.3. No evidence of acute infarct. 