From the case:
Caroticocavernous fistula (indirect)
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CT through the orbits demonstrates marked enlargement of the right superior ophthalmic vein associated with proptosis, straightening of the optic nerve and prominence of the right cavernous sinus.
From the case:
Caroticocavernous fistula (indirect)
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Angiography demonstrates both ICA and ECA shunting to the cavernous sinus and superior ophthalmic vein consistent with an indirect caroticocavernous fistula.