Meningioma, 6 month follow up for changes. There is an extra-axial enhancing left lateral skull base mass centered along the left petrous apex with extension into the cavernous sinus left prepontine cistern and along the left tentorial leaflet. There is associated hyperostosis and permeation of tumor into the underlying bone. The mass also protrudes in the sella, traverses the left lateral wall of the sphenoid sinuses, and extends into the left optic canal. Overall, the mass measures up to approximately 7 cm. Although the mass has not significantly changed since 2014, it appears to have increased slightly in size since 2013. There is mass effect and a patchy area of high T2 signal in the inferior left temporal lobe, which is compatible with vasogenic edema. There is encasement of the left cavernous carotid artery with diffuse narrowing of the flow void. The ventricles are normal in size and configuration. There is no significant midline shift. There is staphylomatous deformity of the bilateral globes. There is mild high T2 signal within the left mastoid air cells suggestive of fluid or mucosal thickening. There appears to be filler material within the bilateral nasolabial folds.
An extra-axial enhancing left lateral skull base mass centered along the left petrous apex with extension into the cavernous sinus left prepontine cistern and along the left tentorial leaflet with associated hyperostosis and permeation of tumor into the underlying skull, as well as encasement of the left cavernous carotid artery, and vasogenic edema in the left temporal lobe is compatible with a meningioma. Although the mass has not significantly changed since 2014, it appears to have increased slightly in size since 2013. 