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Spontaneous isolated dural arteriovenous fistula of the cavernous sinus: endovascular approach via the foramen ovale. A technical note



Spontaneous isolated dural arteriovenous fistula of the cavernous sinus: endovascular approach via the foramen ovale. A technical note



Interventional Neuroradiology 18(4): 458-462



The endovascular treatment of spontaneous dural cavernous sinus fistula (DAVF) can be accomplished by arterial approach, just with symptoms relief, or by numerous venous approaches through the inferior petrosal sinus, ophthalmic vein, anterior or posterior intercavernous sinus and facial vein. Our case suggests the approach to the cavernous sinus via the foramen ovale and emissary veins puncture as an alternative when there is no possibility of venous approach conventionally described. A 76-year-old woman presented with right conjunctival hyperemia, exophthalmos, intraocular pressure increasing and visual deficits in a period of six months. Angiographic diagnosis of spontaneous DAVF isolated from the cavernous sinus, Barrow Type C, with exclusive venous drainage through the superior ophthalmic vein. Endovascular treatment was performed under general anesthesia. Attempts to approach the cavernous sinus through the inferior petrosal sinus ipsilateral and contralateral intercavernous, facial vein and pterygoid plexus, as well as by dissection and direct puncture of the superior ophthalmic vein were not possible. An approach to the cavernous sinus was performed by puncturing the foramen ovale, catheterization of the emissary vein of the foramen ovale with occlusion of the fistula with microcoils. There was a symptomatic regression with gradual normalization of intraocular pressure, exophthalmos and conjunctival hyperemia in three months. The approach to the cavernous sinus through the foramen ovale and catheterization of the emissary cranial skull base vein is an exception and should be considered in cases of spontaneous and isolated DAVF not accessible by a conventional approach.

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PMID: 23217641


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