Fig. 2From: Complete ophthalmoplegia, complete ptosis and dilated pupil due to internal carotid artery dissection: as the first manifestation of Takayasu arteritisMRI showing dissection of the right internal carotid artery in the cavernous sinus (shown by the red arrow). A thrombosed false lumen of 1.5 × 1 cm, was seen. The thrombosed lumen was of intermediate signal intensity in and did not enhance with contrast. This was compressing the right cavernous sinus. Right internal carotid artery was significantly narrowedBack to article page