Secondary malignant neoplasm of brain [C79.31], Reason for Study: ^Reason: brain mets (tonsil SCC) s/p resection, post-op SRS History: assess for EOD There is no evidence of acute ischemic or hemorrhagic lesion.There is no evidence of abnormal enhancement.Focal high signal intensity on the left parietal lobe precuneus referred to prior resection of metastatic lesion on FLAIR imaging is still seen, unchanged since prior scan.The ventricles, sulci and cisterns are symmetric and unremarkable. There is no mass, mass effect, edema, midline shift, intra or extra-axial fluid collection/hemorrhage, restricted diffusion/acute ischemia, or abnormal contrast enhancement. The midline structures and cranial-cervical junction are normal. Normal flow voids are identified in the major intracranial vessels. The mastoid air cells are clear.Mucosal thickenings on ethmoid sinus, bilateral maxillary sinuses and frontal sinus with retention cyst is on the left maxillary sinus, grossly unchanged since prior scan.
Unchanged resection area focal FLAIR high signal intensity since prior scan.No evidence of new abnormal enhancement.No evidence of acute ischemic or hemorrhagic lesion.