Dural Arteriovenous Fistulas with Perimedullary Venous Drainage Successfully Managed Via Endovascular Electrocoagulation.

Abstract

Dural arteriovenous fistulas (DAVFs) with perimedullary venous drainage are very rare intracranial DAVFs. Treating DAVF via an endovascular electrocoagulation technique, to the best of our knowledge, has not been reported in the literature. We therefore report the first successful case. We report a rare case of Cognard type V DAVF. The feeding arteries were the middle meningeal artery, the recurrent meningeal branch of ophthalmic artery, and the meningohypophyseal trunk. The patient presented with paresthesia and weakness in the lower limbs. T2-weighted magnetic resonance imaging revealed a high signal in the medulla oblongata and upper cervical spinal cord. Our first procedure via the middle meningeal artery with Onyx 18 (ev3 Neurovascular) as the embolization agent failed to occlude the fistula. We finally occluded the fistula with the endovascular electro-coagulation technique. Two-year follow-up revealed total disappearance of the fistula and relieve of patient's symptoms. The endovascular electrocoagulation technique is very effective in the management of complex DAVFs with perimedullary venous drainage.