Question 2398
An MRI of a patient with left facial numbness and ophthalmoplegia shows a T2 intermediate signal intensity mass in the left cavernous sinus which exhibits homogeneous enhancement and extends into Meckel’s cave and the orbital apex. The flow void of the left internal carotid artery is mildly narrowed. CT shows mild thickening and sclerosis of the lateral wall of the left sphenoid sinus.
What is the most likely diagnosis?