From the case: Caroticocavernous fistula
Cerebral angiogram (DSA)
Frontal Right Inferior Petrosal Sinus
Opacification of right cavernous sinus noted, with likely previously partially thrombosed right inferior petrosal sinus and portions of the cavernous sinus. Venous microcatheter injections into the cavernous sinus confirm the caroticocavernous fistula anatomy visualized by right internal carotid artery injections, with eventual microcatheter position wedged into venous side of caroticocavernous fistula. Final images show Onyx cast in appropriate position within cavernous sinus where the caroticocavernous fistula existed prior to embolization.