Characteristics, diagnosis and treatment of hypoglossal canal dural arteriovenous fistula: report of nine cases

Abstract

The incidence of hypoglossal canal DAVF was not very low in our series. Contralateral carotid injection is an essential examination to provide an accurate diagnosis. TVE should be considered when access is available, although TAE is also appropriate for shunt reduction.

Intraosseous Cranial Dural Arteriovenous Fistula Treated with Transvenous Embolization

“…9,10,12 These lesions could possibly be intraosseous DAVFs, but not always. Ernst et al 9 described 3 cases of DAVFs that involved the anterior condylar vein within the hypoglossal canal.…”

“…Surgical resection for a posterior fossa DAVF achieved cura-tive results in several reports, but surgery was usually selected as a secondary choice after endovascular treatment because of the risk. 2,4,8 In selected cases, transarterial embolization of a DAVF in other locations could be curative, 12 but in the case of an intraosseous DAVF, most of the fistulas recurred after transarterial embolization. 3,8 The ascending pharyngeal artery (APA) was the main feeder for the intraosseous DAVFs in the previous reports and in the present cases.…”

“…[9][10][11][12] We thought that it was very important to define the fistula focus as manifest by the dilated venous pouch within the bone. In cases with a lesion involving the hypoglossal canal, contralateral external carotid artery, or common carotid artery angiography could be helpful for localization of the lesion.…”

“…There was 1 case reported of a hypoglossal canal DAVF complicated by permanent hypoglossal nerve palsy after transvenous embolization in the dilated venous pouch. 12 Because the hypoglossal canal is a tubular canal with limited space, a packed coil mass within the canal could produce a mass effect on the hypoglossal nerve and cause nerve palsy.…”

“…3,[8][9][10][11][12] Some patients were treated by surgical resection, and sometimes the DAVFs were treated by endovascular treatment via the transarterial or transvenous route. Transvenous embolization of a DAVF is the most effective option for curative treatment.…”