Intracranial mass. There is an irregularly rim-enhancing mass centered in the right temporal stem that measures up to approximately 3 cm, with multiple adjacent smaller peripherally-enhancing nodules and extensive surrounding edema involving right thalamus, right middle cerebral peduncle, right basal ganglia, and right frontal lobe. There is a small amount of susceptibility effect in the dominant mass, but no evidence of acute intracranial hemorrhage or acute infarct. There are areas of T2 hyperintensity in the right parietal lobe white matter without corresponding enhancement. There is effacement of the temporal horn of the right lateral ventricle and mild midline shift to the left, but no herniation. The major cerebral flow voids are intact. The orbits, skull, and scalp soft tissues are grossly unremarkable. There are retention cysts in the left maxillary sinuses.
A dominant mass centered in the right temporal stem that measures up to approximately 3 cm, with multiple satellite lesions likely represents a high grade glial neoplasm. Nonenhancing white matter lesions in the right parietal lobe are nonspecific.