skip to main content

SciTech ConnectSciTech Connect

Title: Transarterial Embolization of Type II Endoleaks after EVAR: The Role of Ethylene Vinyl Alcohol Copolymer (Onyx)

Purpose: To determine the feasibility and efficacy of transarterial endoleak embolization using the liquid embolic agent ethylene vinyl alcohol copolymer (Onyx). Methods: Over a 7-year period eleven patients (6 women, 5 men; mean age 68 years, range 37-83 years) underwent transarterial embolization of a type II endoleak after endovascular aortic aneurysm repair using the liquid embolic agent Onyx. Two patients (18 %) had a simple type II endoleak with only one artery in communication with the aneurysm sac, whereas 9 patients (82 %) had a complex type II endoleak with multiple communicating vessels. We retrospectively analyzed the technical and clinical success of transarterial type II endoleak embolization with Onyx. Complete embolization of the nidus was defined as technical success. Embolization was considered clinically successful when volume of the aneurysm sac was stable or decreased on follow-up CT scans. Result: Mean follow-up time was 26.0 (range 6-50) months. Clinical success was achieved in 8 of 11 patients (73 %). Transarterial nidus embolization with Onyx was technically successful in 6 of 11 patients (55 %). In three cases the nidus was embolized without direct catheterization from a more distal access through the network of collateral vessels. Conclusion: Onyx is a favorable embolicmore » agent for transarterial endoleak embolization. To achieve the best clinical results, complete occlusion of the nidus is mandatory.« less
Authors:
; ; ; ; ; ; ;  [1] ;  [2]
  1. University Medical Center Regensburg, Department of Radiology (Germany)
  2. Krankenhaus Barmherzige Brueder Regensburg, Department of Radiology (Germany)
Publication Date:
OSTI Identifier:
22208011
Resource Type:
Journal Article
Resource Relation:
Journal Name: Cardiovascular and Interventional Radiology; Journal Volume: 36; Journal Issue: 5; Other Information: Copyright (c) 2013 Springer Science+Business Media New York and the Cardiovascular and Interventional Radiological Society of Europe (CIRSE); http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
62 RADIOLOGY AND NUCLEAR MEDICINE; ALCOHOLS; ARTERIES; COMPUTERIZED TOMOGRAPHY; COPOLYMERS; ETHYLENE; PATIENTS; VASCULAR DISEASES