What question did this study set out to answer?

This analysis aims to compare the clinical outcomes of embolization treatment between metameric and sporadic spinal cord arteriovenous malformations (SAMS and non-SAMS).

April 17, 2026

Impact of Embolization on Clinical Outcomes After Treatment of Metameric and Sporadic Spinal Cord Arteriovenous Malformations: An Analysis of 216 Patients

Key Points

This analysis aims to compare the clinical outcomes of embolization treatment between metameric and sporadic spinal cord arteriovenous malformations (SAMS and non-SAMS).
Analysis of clinical data from 216 patients with SAMS and non-SAMS.
Assessment of clinical outcomes and rates of hemorrhagic events post-embolization.
Evaluation of occlusion levels achieved during treatment.
Embolization significantly reduced hemorrhagic events in SAMS to levels similar to non-SAMS.
SAMS patients experienced higher risks of clinical and angiographic worsening despite embolization.
Achieving ≥75% occlusion of intradural SCAVMs lowered clinical risks for SAMS.

Abstract

Embolization reduced the risk of hemorrhagic events in SAMS to a level comparable with the non-SAMS group. However, SAMS carries a higher risk of clinical and angiographic worsening than non-SAMS, even after embolization. Achieving sufficient occlusion (≥75% occlusion) of intradural SCAVMs mitigates these clinical risks in SAMS.

Impact of Embolization on Clinical Outcomes After Treatment of Metameric and Sporadic Spinal Cord Arteriovenous Malformations: An Analysis of 216 Patients

Key Points

Abstract

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