Histopathological changes in brain arteriovenous malformations after embolization using Onyx or N-butyl cyanoacrylate: Laboratory investigation
Intracranial Arteriovenous Malformations
Onyx penetrates much smaller vessels than NBCA. Inflammation occurs with both embolic agents at equal frequency. Evidence of chronic foreign-body giant cells and recanalization after Onyx embolization shows a long-standing reaction to Onyx and raises questions about the permanence of occlusion after Onyx embolization.