Metastatic thyroid cancer for evaluation of single thyroid metastases. There are postsurgical findings related to a right frontal craniotomy. There is interval resolution of subcentimeter nodular enhancement along the posterior aspect of the resection cavity with areas of intrinsic T1 hyperintensity and susceptibility that remain, which likely represent blood products. There is residual confluent T2 hyperintensity in the adjacent brain parenchyma. There is also an unchanged nonspecific punctate focus of susceptibility effect in the right basal ganglia. The ventricles and sulci are unchanged. There is no midline shift or mass effect. There is no evidence of acute infarction. There is a small mucous retention cyst in the right maxillary sinus. There is an unchanged subcentimeter posterior nasopharynx retention cyst or Thornwaldt cyst. There is unchanged partially imaged asymmetric hyperenhancement of the left parotid gland, which may be treatment-related.
Post-treatment findings related to resection of a right frontal lobe metastasis with interval resolution of enhancement along the margins of the resection cavity, without evidence of tumor recurrence.