Headache 2 weeks ago. MRI: There is no evidence of intracranial hemorrhage, mass, or acute infarct. There is minimal nonspecific cerebral white matter T2 hyperintensity. 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, skull, and scalp soft tissues are grossly unremarkable. There is a small left maxillary sinus retention cyst.MRA: There is a 1 to 2 mm outpouching at the origin of the right posterior communicating artery. Otherwise, there is no evidence of significant steno-occlusive lesions.
1. Minimal nonspecific cerebral white matter T2 hyperintensity. Otherwise, no evidence of acute intracranial hemorrhage, mass, or acute cerebral infarction.2. A 1 to 2 mm outpouching at the origin of the right posterior communicating artery likely represents a prominent infundibulum rather than a saccular aneurysm. Otherwise, no evidence of significant steno-occlusive lesions.