This axial source image from an intracranial MRA demonstrates pathologic enlargement of multiple lateral convexity veins (on the viewer's left) in addition to abnormal enlargement of deep veins. These changes reflect a post-traumatic carotid cavernous sinus fistula. These occur 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 | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Living Art Enterprises |
Bildgröße: | 4200 px × 4935 px |
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