Intramedullary arteriovenous malformations: vascular architecture and endovascular embolization / 介入放射学杂志

ABSTRACT

Objective To study the vascular architecture and the indication of endovascular embolization of intramedullary AVMs and evaluate the therapeutic effect. Methods 15 patients (male 9 and female 6 , 9 to 43 years old) with acute or progressive paralysis were undergone DSA and endovascular embolization. The embolic material was PVA particles and silk suture segments. Lidocaine test was performed before embolization if it was necessary. Results There were 3 glomus AVMs and 12 juvenile AVMs among the 15 cases. The glomus AVM was usually fed by single artery, the juvenile AVM was fed by two or more arteries. Among 15 patients, 2 were cured, 3 had excellent effect, 6 had good effect, 4 showed no changed and no one became worsening. After 6 months to 5 years follow up, 7 patients with recurrency were re embolized,another 2 patients were lost of follow up. Conclusions Endovascular embolization is a mild invasive, safety and effective therapeutic method for curing AVMs by avascularizing the rudus and decreasing the drainage vein pressure and bleeding.