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Transvenous endovascular treatment is the first choice for treating most cavernous sinus dural arteriovenous fistulas (CDAVFs). Among several available venous routes, the inferior petrosal sinus is the most commonly used. We report a case of CDAVF treated with endovascular treatment via the middle temporal vein (MTV). A 65-year-old man presented with unilateral chemosis and exophthalmos for approximately two months. Digital subtraction angiography showed a right CDAVF with predominant venous drainage toward the right superior ophthalmic vein. The superior ophthalmic vein primarily drained into the dilated MTV. Both sides of the inferior petrosal sinus were occluded; therefore, transvenous embolization was performed via the MTV route. The fistula was completely obliterated. The patient’s symptoms improved and the postoperative course was uneventful. The transfemoral approach via the MTV to treat CDAVF provides a crucial alternative when other venous routes are difficult or impossible to navigate with a catheter.

Middle temporal vein access for transvenous embolization of Cavernous sinus dural arteriovenous fistula: A case report and review of literature