Meningioma: headaches. There is a smoothly contoured T2 hyperintense avidly enhancing mass in the right cavernous sinus that measures up to approximately 15 mm and partially encircles the cavernous right internal carotid artery. The pituitary gland and infundibulum are intact. There is no evidence of intracranial hemorrhage or acute infarct. The brain parenchyma appears unremarkable. The ventricles and basal cisterns are normal in size and configuration. There is no midline shift or herniation. The orbits, skull, paranasal sinuses, and scalp soft tissues are grossly unremarkable.
Findings suggestive of a right cavernous sinus hemangioma versus less likely a meningioma.