Dural thickening is demonstrated lining the anterior aspect of the middle cranial fossa, with associated florid hyperostosis, transosseous enhancement, and periosteal thickening over the surface of the lateral wall of the orbit and temporal fossa. The aforementioned hyperostosis results in proptosis and stenosis of the orbital apex with distortion of the extraocular muscles and optic nerve. The hyperostosis also involves the anterior clinoid and surrounds the optic nerve canal and superior orbital fissure. Inferiorly hyperostosis extends to the anterior margin of the foramina ovale. Superiorly there is extension into the orbital roof and into the squamous part of the temporal bone. No significant enhancing soft tissue component can be identified either within the intracranial cavity, or orbit or base of skull. The remainder of the brain is unremarkable in appearance.
Typical appearances of a en plaque/intraosseous meningioma with florid hyperostosis and proptosis.