Female, 27 years old, with metastatic HER-2 positive breast cancer with known CNS metastases. Evaluate brain metastases and compare to outside MRI from July. Eight to ten enhancing lesions are evident within both cerebral hemispheres and the right cerebellum. Most are situated along the periphery of the brain and most demonstrate a rather curvilinear or gyriform pattern of enhancement. Lesions within the right cerebellum are elongated and tend to follow the cerebellar fissures. The largest lesion is found in the inferior right cerebellum and measures 23 x 5 mm.Some of the lesions induce minimal surrounding edema and some induce none. No evidence of significant generalized mass effect is seen. No abnormal extra-axial fluid collections are detected. There are no findings to suggest acute intracranial hemorrhage,and the above-mentioned lesions do not appear to be hemorrhagic themselves. No pathologic enhancement of the visualized cranial nerves is seen. The ventricles are normal in size.
Numerous (8-10) enhancing lesions are seen in both cerebral hemispheres and the right aspect of the cerebellum compatible with metastases. These lesions are situated peripherally along the brain surface and are relatively gyriform in morphology or they follow the cerebellar fissures suggesting involvement of the subarachnoid space. Please note that no comparison examination is available at the time of this interpretation. If the prior examination can be made available, we will be happy to make a comparison and addend this report.