There is asymmetric enlargement of the right superior ophthalmic vein and right cavernous sinus. Enhancing foci are seen in the right cavernous sinus in the arterial phase. Reflux of contrast into the right superior ophthalmic vein is noted with enhancement in the arterial phase. There is right-sided proptosis, diffuse thickening of right extra-ocular muscles, mild periorbital swelling and mild soft tissue stranding/edema in the right intraorbital fat.