Blurring of vision and chemosis in left eye.
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There is dilatation and enhancement of the left superior ophthalmic vein as well as sphenoparietal sinus. There is also enhancement of the left cavernous sinus in this arterial phase scan in keeping with caroticocavernous fistula. No proptosis is evident.
Caroticocavernous fistulas (CCF) represent abnormal communication between the carotid circulation and the cavernous sinus. They can be classified as direct or indirect which are separate conditions with different etiologies. Clinical presentations:
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