Vein-first embolization is superior to transarterial approach in type IIIb arteriovenous malformations.

ABSTRACT:

Objective

To propose a modified treatment concept for type IIIb arteriovenous malformation (AVM), involving a vein-first (VF) strategy that focuses on direct puncture and coil embolization of dilated veins, followed by ethanol injection from the vein to feeding arteries. This retrospective study evaluated the safety and efficacy of this approach.

Methods

A total of 117 patients (55 males; median age, 27 years) with type IIIb AVMs were retrospectively reviewed. Patients were divided into two groups: a transarterial (TA) embolization-dominant group and a VF group, which underwent direct puncture of veins with coil embolization followed by ethanol injection. AVM characteristics, embolization techniques, number of treatment sessions, angiographic outcomes, and procedure-related

SUBMITTER: Kim JG 

PROVIDER: S-EPMC12269380 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature