Abstract
Although dural arteriovenous fistulas (DAVFs) occur in any structure that is covered by the dura mater, DAVFs at the posterior condylar canal have not been reported. We present a DAVF that involves the posterior condylar canal and drains into the posterior condylar vein and the occipital sinus, which was treated by selective transvenous embolization. Knowledge of venous anatomy of the craniocervical junction and careful assessment of the location of the arteriovenous fistula can contribute to successful treatment.
Highlights
We present the case of a patient with a dural arteriovenous fistulas (DAVFs) that involves the posterior condylar canal
We discuss the venous structures related to the posterior condylar canal
An angiogram of the left external carotid artery showed that the arteriovenous fistula (AVF) was fed by the left ascending pharyngeal artery and the left occipital artery, and it drained through the posterior condylar vein into the sigmoid sinus and the paravertebral vein and into the occipital sinus (Fig 1A, B)
Summary
SUMMARY: dural arteriovenous fistulas (DAVFs) occur in any structure that is covered by the dura mater, DAVFs at the posterior condylar canal have not been reported. We present a DAVF that involves the posterior condylar canal and drains into the posterior condylar vein and the occipital sinus, which was treated by selective transvenous embolization. Knowledge of venous anatomy of the craniocervical junction and careful assessment of the location of the arteriovenous fistula can contribute to successful treatment
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