Therapeutic management of intracranial dural arteriovenous shunts with leptomeningeal venous drainage: report of 53 consecutive patients with emphasis on transarterial embolization with acrylic glue

Clinical article

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Object

There is a strong correlation between the venous drainage pattern of intracranial dural arteriovenous shunts (ICDAVSs) and the affected patients' clinical presentation. The ICDAVSs that have cortical venous reflux (CVR) (retrograde leptomeningeal drainage: Borden Type 2 and 3 lesions) are very aggressive and have a poor natural history. Although the necessity of treatment remains debatable in ICDAVSs that drain exclusively into a sinus (Borden Type 1), lesions with CVR must be treated because of the negative effects of the retrograde venous drainage. Surgery, radiosurgery, and embolization have been proposed for management of these lesions, but endovascular therapy is considered the most appropriate therapeutic strategy in ICDAVSs. New embolic materials, such as Onyx, have been recently developed and are considered to represent a kind of “gold standard” for embolization of these lesions. The purpose of this study is to emphasize the importance of transarterial embolization using acrylic glue in the therapeutic management of ICDAVSs with CVR, and to compare the results the authors obtained using this treatment with those reported in the literature for Onyx treatment of the same type of dural shunts.

Methods

The clinical and radiological records of 53 consecutive patients suffering from ICDAVSs with CVR (Borden Types 2 or 3) were reviewed. All cases were managed with the same angiographic and therapeutic protocol. Localization of the lesions, their clinical symptoms, their angioarchitecture, their therapeutic management, and the results were analyzed.

Results

Fourteen ICDAVSs were located at the superior sagittal sinus and/or convexity veins, 13 at the transverse and sigmoid sinuses, 10 at the tentorium, 5 in the anterior cranial fossa, 4 at the foramen magnum, 3 at the torcula, 2 at the straight sinus, and 1 at the vein of Galen. One patient presented with an infantile form of ICDAVS with multiple shunts. Hemorrhage had occurred in 36% of cases. Forty-three patients underwent transarterial embolization (42 with acrylic glue). Complete closure of the fistula was obtained in 34 patients. Suppression of the CVR with partial occlusion of the main shunt was achieved in all other cases. No mortality or permanent morbidity was observed in this series.

Conclusions

Intracranial dural arteriovenous shunts can be safely managed by transarterial embolization, which can be considered in most instances as an effective first-intention treatment. Acrylic glue still allows a cheap, fast, and effective treatment with high rates of cures that compare favorably to those obtained with new embolic materials.

Abbreviations used in this paper: CVR = cortical venous reflux; ICDAVS = intracranial dural arteriovenous shunt; NBCA = N-butylcyanoacrylate; VA = vertebral artery.
Article Information

Contributor Notes

Address correspondence to: Georges Rodesch, M.D., Ph.D., Service de neuroradiologie diagnostique et thérapeutique, Hôpital FOCH 40, rue Worth B.P. 36, 92151 Suresnes, France. email: g.rodesch@hopital-foch.org.Please include this information when citing this paper: published online September 4, 2009; DOI: 10.3171/2009.7.JNS08490.
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