Metastatic thyroid cancer, status post resection on April 20, 2014. There are postsurgical findings related to a right pterional craniotomy with unchanged mild enhancement superimposed upon the mild intrinsic T1 hyperintensity and susceptibility effect along the margins of the right inferior frontal gyrus resection cavity. There is also unchanged surrounding confluent T2 hyperintensity. There is slight interval increase in size of the lesion at the grey-white matter interface with T1 hyperintensity and possibly contrast enhancement and susceptibility effect posterior medial to the treatment bed in the inferior right frontal gyrus, now measuring up to 3 mm, previously 2 mm. The punctate enhancing lesion in the left superior cerebellar hemisphere remains minimally conspicuous and there is no associated vasogenic edema. The punctate focus of susceptibility effect without associated enhancement in the right basal ganglia is unchanged. The ventricles and sulci are unchanged. There is no midline shift. There is no evidence of acute infarction. There is an unchanged subcentimeter posterior nasopharynx retention or Thornwaldt cyst. There is minimal mucosal thickening in the inferior aspect of the right maxillary sinus.
1.Post-treatment findings related to resection of a right frontal lobe metastasis with persistent nonspecific enhancement along the posterior margin of the treatment bed. 2. A lesion medial to the treatment bed appears to be slightly larger and may represent a metastasis. 3. The punctate lesion in the left superior cerebellar hemisphere remains minimally conspicuous. 