Case #23

Case #21

• Infiltrative enhancing soft tissue encasing the left optic nerve in the orbital apex and contacts the extraocular muscles with notable enlargement of the adjacent superior and lateral rectus muscles
• Diffusely enhancing, dural-based mass along the clivus and right greater wing of the sphenoid with extension into the right aspect of the cavernous sinus abutting the right internal carotid artery posterior genu and terminus, the posterior aspect of the sella with displacement of the pituitary infundibulum, the right Meckel’s cave, the right middle cranial fossa with a peritumoral cyst exerting mass effect on the medial right temporal lobe, and the prepontine cistern with mass effect on the midbrain and pons, encasement of the basilar artery (as well as the P1 segment of the right PCA, right superior cerebellar artery, and right posterior communicating artery), and displacement of the cisternal segment of the right trigeminal nerve. A dural tail extends inferiorly along the clivus and into the right internal auditory canal
• No evidence of acute infarct, hemorrhage, or hydrocephalus

• Orbital pseudotumor