Carotid Cavernous Sinus Fistula,MRI

Numéro d’image : 12036549
Carotid Cavernous Sinus Fistula,MRI
This lateral (from the side) view from an internal carotid angiogram in the late arterial phase demonstrates marked arterial venous shunting into the cavernous sinus (on viewer's left),in addition to extensive cortical venous drainage/congestion. This occurs as a result of a traumatic tear of the internal carotid artery within the cavernous sinus,resulting in an arterial-venous shunt directly into the cavernous sinus and its venous outflow,which often includes orbital venous drainage. The degree of cortical venous drainage/congestion directly correlates with the biologic aggressiveness of these lesions. Those with abundant cortical venous drainage/outflow have a high risk for intracranial hemorrhage. These are often treated through endovascular embolization techniques
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