1. Cavernous Sinus Meningioma
940-3
Cavernous Sinus Meningioma

2. Neuroimaging
Figure 1. Pre-contrast axial T1WI shows a mass expanding the left cavernous sinus.

3. Neuroimaging
Figure 2. Post-contrast axial T1WI shows the mass enhances strongly and uniformly. Note “dural tail” extending posteriorly along the tentorium. The left internal carotid artery is occluded.

4. Neuroimaging
Figure 3. Coronal post-contrast T1WI shows the mass expands the cavernous sinus and completely obliterates Meckel’s cave (contrast with the normal Meckel’s cave on the right).

5. Pathology
Meningiomas have a variable histological appearance but are composed of epithelial-like cells that form whorl patterns.