TRANSARTERIAL EMBOLIZATION AND ABLATION OF RENAL ARTERIOVENOUS MALFORMATIONS: EFFICACY AND DAMAGES IN 30 PATIENTS WITH LONG-TERM FOLLOWUP

AbstractPurpose: We evaluate the long-term efficacy and side effects of transarterial embolization and ablation for renal arteriovenous malformations.Materials and Methods: A total of 30 patients with cirsoid arteriovenous malformations causing massive hematuria underwent 34 procedures of embolization or ablation. We confirmed the ratios of occluded arteriovenous malformation areas on angiograms and those of infarcted areas on computerized tomography. All patients were followed for 4.1 to 15.0 years (mean 8.0 +/− 2.8) after the initial procedures.Results: Hematuria ceased in all patients after the initial procedures, including partial embolization or ablation of the arteriovenous malformations in 8. Massive hematuria recurred in 4 patients, who had undergone absorbable gelatin sponge (2), embolization, combined alcohol and subselective absorbable gelatin sponge embolization (1) and polyvinyl alcohol particles embolization (1). In these 4 cases total ablation of the arteriovenous malformations with alcohol...