Arteriovenous communication in the orbit.
Arteriovenous malformations (AVMs) are anomalous communications between arterial and venous systems without interposed capillaries. These lesions are rarely entirely intraorbital. A case of an arteriovenous communication between branches of the internal and external carotid arterial circulations and the ophthalmic veins located within the orbit is reported. Treatment with embolization resulted in a branch retinal artery occlusion. Attempted direct arterial occlusion of a dural-based fistula of the eye is a risky procedure. If embolized, AVMs should probably be approached from the venous side, if at all.
Kim
A W
AW
Cole Eye Institute, Cleveland Clinic Division of Ophthalmology, Ohio, USA.
Kosmorsky
G S
GS
D000368:Aged; D001165:Arteriovenous Malformations / Q000150:complications* / Q000175:diagnosis / Q000628:therapy; D002340:Carotid Artery Diseases / Q000150:complications* / Q000175:diagnosis / Q000628:therapy; D002342:Carotid Artery, External / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002343:Carotid Artery, Internal / Q000002:abnormalities* / Q000000981:diagnostic imaging; D004621:Embolization, Therapeutic / Q000009:adverse effects; D006801:Humans; D008269:Macular Edema / Q000209:etiology; D008279:Magnetic Resonance Imaging; D008297:Male; D009915:Orbit / Q000098:blood supply* / Q000473:pathology; D011859:Radiography; D015356:Retinal Artery Occlusion / Q000209:etiology; D012170:Retinal Vein Occlusion / Q000209:etiology; D014680:Veins / Q000002:abnormalities* / Q000473:pathology; D014792:Visual Acuity