Left: T2WI shows isointense mass lesion within and expanding the left cavernous sinus.
Middle and right: T1WI's without and with gadolinium show this lesion is also isointense
on T1 and enhances homogeneously. The linear nonenhancing structure is the lateral
dural margin of the cavernous sinus. The mass also extends medially into the sella.
Additional T1WI's with gadolinium reveal encasement of the cavernous portion
of the left internal carotid artery. The mass also encroaches on the left superior
orbital fissure and optic foramen.
Key words: mri tumor neoplasia paracavernous
Cavernous sinus meningioma