Meningioma, 6 month follow up. There is no significant interval change in size of the 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 also associated hyperostosis and permeation of tumor into the underlying skull. There is encasement of the left cavernous carotid artery, which is mildly narrowed. There is persistent mass effect with vasogenic edema in the left temporal lobe. There is also mass effect upon the left brainstem. There is no evidence of acute intracranial hemorrhage or acute infarction. The ventricles are unchanged 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. There are unchanged patchy T1 hyperintense areas in the left parietal skull.
No significant interval change in size of the left petroclival meningioma with extension into the cavernous sinus, left prepontine cistern, and along the left tentorial leaflet, and permeation of tumor into the underlying skull, as well as encasement and narrowing of the left cavernous carotid artery. Associated vasogenic edema in the left temporal lobe persists. 