Metastatic breast cancer. There is a heterogeneously enhancing, low T1 and T2 signal intensity left temporal region calvarium lesion that measures up to 5 cm in length with epidural extension that measures up to 7 mm in thickness. There is mild mass effect upon the underlying brain parenchyma. There also appears to be mild subgaleal extension of tumor. There is no evidence of intracranial hemorrhage or acute infarct. There is mild nonspecific periventricular cerebral white matter T2 hyperintensity, but no evidence of intraparenchymal enhancing lesions. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits are grossly unremarkable.
Left temporal calvarium region metastasis with epidural extension measuring up to 7 mm in width. 