Safety and Efficacy of Venous Coil-Embolization of Type IIa Pelvic Arteriovenous Malformations
- Author:
Lyo Min KWON
1
;
Sang Yub LEE
;
Young Soo DO
;
Kwang Bo PARK
;
Jun Gon KIM
;
Shin-Seok YANG
;
Dong-Ik KIM
Author Information
- Publication Type:Brief Research Report
- From:Korean Journal of Radiology 2025;26(3):239-245
- CountryRepublic of Korea
- Language:English
-
Abstract:
Objective:To evaluate the safety and efficacy of coil embolization of venous segments in patients with Type IIa pelvic arteriovenous malformations (AVMs).
Materials and Methods:A retrospective study was performed on 13 patients (median age, 43 years, range 20–62 years, 7 males) who underwent transvenous coil embolization for Type IIa pelvic AVM (characterized by multiple arterioles shunting to focal venous segments of a single draining vein) without the use of additional liquid embolic agents from March 2017 to February 2023. Treatment outcomes were analyzed based on clinical evaluations, post angiography findings, and follow-up CT.
Results:Fourteen procedures were performed on 13 patients. Except in one patient, all treatments were completed in a single session. Transvenous access was employed in 10 procedures, whereas direct puncture was used in four sessions. The embolization procedures used an average of 55.7 ± 58.5 coils (range, 7–238) and lasted an average of 127.3 ± 39.5 minutes.The technical success rate was 92.9% (of 13/14). All patients reported symptom improvement. Follow-up CT scans showed complete occlusion of the AVM without recurrence in ten of the 13 patients. There was one minor adverse event: a small retroperitoneal hemorrhage, likely related to direct puncture, which resolved spontaneously. No other adverse events were observed.
Conclusion:Coil embolization of the draining vein segment, without the use of additional liquid embolic agents is a safe and effective method for managing Type IIa pelvic AVM.
