Left cavernous sinus meningioma s/p SRS with subsequent mass change on imaging. There is interval decrease in size of the extra-axial mass centered along the left cavernous sinus, which now measures 11 x 26 mm, previously 14 x 38, resulting in decreased mass effect upon adjacent structures. In addition, the mass now demonstrates more homogenous enhancement. There is no evidence of acute intracranial hemorrhage or acute infarction. The ventricles are unchanged in size and configuration. There is no midline shift or herniation. The intracranial internal carotid artery flow voids appear to be intact. There is retention cyst formation in the bilateral maxillary sinuses. The skull and scalp soft tissues are unremarkable.
Interval evolution of post-treatment findings with decrease in size of the mass centered along the left cavernous sinus.