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J Cerebrovasc Endovasc Neurosurg. 2016 Dec;18(4):396-401. doi: 10.7461/jcen.2016.18.4.396. Epub 2016 Dec 31.

Spontaneous Aggressive Conversion of Venous Drainage Pattern in Dural Arteriovenous Fistula Treated with Onyx Embolization.

Author information

1
Department of Neurosurgery, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea.
2
Department of Radiology, Kyung Hee University Hospital, College of Medicine, Kyung Hee University, Seoul, Korea.

Abstract

We report a case of dural arteriovenous fistula (DAVF) that showed spontaneous conversion of venous drainage pattern from Borden type II to type III within a four month period of follow-up. Upon admission, the patient presented with aggravated neurologic status and newly developed seizure. After admission, endovascular embolization was performed through the middle meningeal artery with Onyx®. Complete obliteration of dural arteriovenous shunt was confirmed by angiography, and the patient's clinical symptoms improved. Although most cases of DAVF show benign clinical course and conversion pattern, close follow-up is required to detect potential aggravation.

KEYWORDS:

Conversion of venous drainage pattern; Cortical venous reflux; Dural arteriovenous fistula; Onyx embolization

Conflict of interest statement

The authors report no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper.

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