Metastatic breast cancer: headaches. There are multiple, approximately 10, supratentorial enhancing lesions. For example, a right occipital lobe peripherally enhancing lesion with mild susceptibility effect measures 10 mm in diameter, previously 5 mm, a new right inferior frontal lobe enhancing lesion measures 5 mm in diameter, a left lateral temporal lobe enhancing lesion measures 5 mm in diameter, previously 2 mm, and a new left periventricular white matter enhancing lesion measures 3 mm in diameter. The lesions are generally associated with mild vasogenic edema. There is no evidence of acute intracranial hemorrhage or acute infarct. The ventricles are normal in size and configuration, including cavum septum pellucidum and vergae. There is no midline shift or herniation. There is a 1 mm outpouching along the right aspect of the anterior communicating artery complex. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
1. Interval increase in size and number of intracranial metastases.2. A 1 mm outpouching along the right aspect of the anterior communicating artery complex may represent an aneurysm or infundibulum. 