Abstract
Although the ipsilateral inferior petrosal sinus (IPS) is preferred for treatment of cavernous sinus dural arteriovenous fistulas (CS-dAVFs), this method is problematic if ipsilateral IPS is occluded. We describe our experience in treating CS-dAVFs with ipsilateral IPS occlusion via the ascending pharyngeal artery (APA). Between January 2013 and June 2017, of 36 CS-dAVFs, 23 with ipsilateral IPS occlusion were identified. Clinical charts, procedural data, angiographic results, and follow-up data were retrospectively reviewed. Of 23 CS-dAVFs, 16 displayed a single or dominant feeding APA on cerebral angiography, of which 13 were treated via the APA initially. Fistulas were occluded successfully through the neuromeningeal trunk of the APA in 7 cases and through the superior pharyngeal branch of the APA in 3 cases. Glue leakage occurred in 2 cases via the superior pharyngeal branch of the APA, and superior pharyngeal branch rupture occurred during superselection of the microguidewire in 1 patient, who was treated by opening the occluded ipsilateral IPS. During the follow-up period, 12 of 13 patients had complete occlusion, and no cranial nerve palsy occurred. CS-dAVF with ipsilateral IPS occlusion can be treated via various methods. Embolization through the APA as an initial access is a reasonable choice.
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