We present the case of a 32 year old patient with spinal cord compression syndrome of 10 months of evolution. Magnetic resonance imaging showed signal voids causing myelopathy that spinal angiography showed to be a type IVb spinal arteriovenous malformation (perimedular arteriovenous fistula type II) supplemented by a posterior spinal artery that originated next to the Adamkiewicz artery from the segmental artery T11 left. The fistula was successfully eradicated by transarterial embolization with cyanoacrylate and the patient experienced progressive improvement. The relevant literature is reviewed. The endovascular approach is the treatment of choice in spinal arteriovenous malformations types IVb and IVc.