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  • Title: Arteriovenous fistula of the clival diploic vein associated with arteriovenous fistula of the posterior condylar canal.
    Author: Hirata K, Kato N, Yamazaki T, Yasuda S, Shiigai M, Matsumaru Y.
    Journal: Interv Neuroradiol; 2021 Oct; 27(5):672-676. PubMed ID: 33715499.
    Abstract:
    We herein report a rare case of a patient with a clival diploic vein arteriovenous fistula (AVF) associated with a posterior condylar canal AVF and discuss the radiological features of clival diploic vein AVF during decision-making on treatment strategies. A 69-year-old male patient with one-year history of pulsatile tinnitus was evaluated with magnetic resonance angiography, which revealed a dilated venous structure. Digital subtraction angiography revealed AVFs located in the clivus and posterior condylar canal. The clival diploic vein AVF was fed by the right internal maxillary artery and the petrous branch of middle meningeal artery and shed to the posterior condylar canal only through an intraosseous vein in the jugular tubercle. Although a catheter could not be navigated into the venous pouch in the clivus, the AVFs were successfully obliterated by transvenous embolization of the venous pouch in the posterior condylar canal.
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