Onyx liquid embolic system (LES): an underestimated tool in the management of peripheral bleedings
Ethylene vinyl alcohol or Onyx copolymer (Medtronic) is an embolization agent increasingly used in peripheral interventional radiology. The Onyx Liquid Embolic System (LES) offers a liquid, non-adhesive, non-absorbable, injectable and permanent embolic agent with an indication for neuro-interventional procedures. Due to its physical properties, Onyx has more embolic predictability than other currently available liquid agents, and seems to have great potential in endovascular bleeding management, especially for non-coagulated patients. The aim of this brief review is to analyze the advantages of Onyx in the emergency setting on the basis of evidence in the current literature.