Axial non-enhanced CT images show right temporal lobe isodense
mass lesion with surrounding edema and mass effect.
With IV contrast, the large, well-circumscribed round mass enhances brightly.
Axial T2WI's show that this mass is extra-axial and mildly hyperintense.
Note the medial uncal herniation and compression of the right cerebral
peduncle. Only a small amount of surrounding edema is present.
Left: the mass has intermediate signal intensity on T1WI.
Right images: Axial T1WI's with gadolinium show bright enhancement of the mass.
Left top & right images: axial and coronal T1WI's with gadolinium show this
extra-axial enhancing mass occupies most of the right temporal fossa and
lies adjacent to the right cavernous sinus.
Left bottom: Collapse image (base view) from a TOF MR angiogram
reveals no flow within the mass.
Left: right internal carotid artery injections (top, AP; bottom, lateral projection)
show vascular blush in the vicinity of the cavernous portion of carotid artery.
Note marked elevation of the right MCA.
Left: right external carotid artery injections (top, AP; bottom, lateral projection)
show additional arterial supply from the middle meningeal artery.
Key words: mri mra angiogram angiography tumor neoplasia