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Transvenous Onyx embolization of a subependymal deep arteriovenous malformation with a single drainage vein: technical note


Cerebral arteriovenous malformations (AVMs) are uncommon. Treatment options include embolization, radiosurgery and surgery, separately or combined, the final goal being complete occlusion of the malformation. We describe the case of a symptomatic small subependymal AVM with a single deep drainage vein previously treated unsuccessfully by radiosurgery and transarterial embolization. The AVM was successfully embolized transvenously using Onyx, achieving complete occlusion in a single treatment session.

  • Arteriovenous Malformation
  • Hemorrhage
  • Liquid Embolic Material
  • Magnetic Resonance Angiography

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