Carotid Cavernous Sinus Fistula,MRI

Numéro d’image : 12036543
Carotid Cavernous Sinus Fistula,MRI
This axial source image from an intracranial MRA demonstrates pathologic enlargement of the cavernous sinus (on the viewer's left),in addition to abnormal enlarged venous channels (white and grey) in the anterior middle cranial fossa. 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
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Crédit: Science Photo Library / Living Art Enterprises
Taille de l’image : 4200 px × 4482 px
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