Mechanical removal of a refluxed Onyx piece from the middle cerebral artery using the Solitaire Stent: Technical report

Interv Neuroradiol. 2017 Jun;23(3):293-296. doi: 10.1177/1591019917694022. Epub 2017 Jan 1.


Onyx reflux into the parent artery is a rare and sometimes significant complication in the treatment of cerebral arteriovenous malformations (AVMs). We report a patient who presented with Onyx reflux into the M1 segment of the middle cerebral artery (MCA) during embolization of a right temporal AVM. The refluxed Onyx cast was successfully removed by a mechanical thrombectomy device using a self-expandable and fully retrievable Solitaire AB stent.

Keywords: Complication of endovascular treatment; Onyx reflux; Solitaire AB stent; mechanic thrombectomy.

Publication types

  • Case Reports

MeSH terms

  • Angiography, Digital Subtraction
  • Cerebral Angiography
  • Dimethyl Sulfoxide / adverse effects*
  • Embolization, Therapeutic / instrumentation*
  • Female
  • Foreign-Body Migration / diagnostic imaging
  • Foreign-Body Migration / therapy*
  • Humans
  • Intracranial Arteriovenous Malformations / diagnostic imaging
  • Intracranial Arteriovenous Malformations / therapy*
  • Middle Aged
  • Middle Cerebral Artery*
  • Polyvinyls / adverse effects*
  • Stents*
  • Tomography, X-Ray Computed


  • Onyx copolymer
  • Polyvinyls
  • Dimethyl Sulfoxide