Abstract
We report a rare case of intraorbital arteriovenous malformation (AVM) in a 62-year-old man who came to our hospital because of a cerebral infarction. Right carotid angiography incidentally showed the nidus of the AVM in the right retro-orbital region, which was fed by the ophthalmic artery and drained by the superior ophthalmic vein. The patient showed no sign of neuro-ophthalmic disturbance. He was subsequently observed without being given any specific treatment. Thirteen cases of intraorbital AVM have been reported. Many cases of intraorbital AVM have shown unilateral proptosis but rarely have caused progressive visual or functional disturbance of the eyes. Most of the feeders and drainers were ophthalmic arteries and ophthalmic veins. These facts suggest the cautious use of surgery or embolization against intraorbital AVM.
