Purpose To investigate the radiologic and angiographic findings of dilated superior ophthalmic vein (SOV) associated with orbital arteriovenous malformations (AVMs)
Method Six patients with orbital AVMs were reported in this article, with clinical symptoms and signs mimicking a cavernous sinus dural arteriovenous fistula. Examinations were done to find images and hemodynamics for differential diagnosis.
Results All patients were found with dilated SOV on CT and MRI. Additional radiographic findings included proptosis and AVMs. All six AVMs were located at the orbit, and one of them was also found with AVMs in brain. The main draining vein was SOV in all cases. The branches contributing to the fistula’s blood supply were the middle meningeal artery, the internal maxillary artery, and the ophthalmic artery.
Conclusion An orbital AVM can cause similar clinical signs and radiologic features to those associated with a CCF. However, the bulging cavernous sinus cannot be found in most AVMs. |
