Aberrant Arteriovenous Shunt Developed after the Resection of Orbital Vascular Malformation

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  • 眼窩血管奇形に対する外科的切除後に形成された動静脈シャントの1例
  • ガンカケッカン キケイ ニ タイスル ゲカテキ セツジョ ゴ ニ ケイセイ サレタ ドウ ジョウミャク シャント ノ 1レイ

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<p> Objective: We report a case of arteriovenous shunt with multilobular venous pouch around the supraorbital fissure, which has not been reported in the literature.</p><p> Case Presentation: A 51-year-old female with a history of craniotomy with a right frontotemporal approach for the surgical resection of a orbital vascular malformation in childhood. She presented with right eye pain, protrusion, and conjunctival hyperemia of the right eyeball. Angiography revealed multilocular venous cavities near the supraorbital fissure from the sphenoid ridge to the middle skull base, with a relatively localized arteriovenous shunt on the venous wall. The shunt blood flow was supplied by the branches of the external carotid artery and drained into the superior ophthalmic vein. The venous cavity where the arteriovenous shunt was formed was also continuous with the cavernous sinus, but it appeared to be an arteriovenous shunt secondary to venous malformation, as the venous structure was multilocular, rather than a single vein. Selective transvenous embolization was performed, and the arteriovenous shunt disappeared and the eye symptoms disappeared.</p><p> Conclusion: After surgery for orbital vascular malformations, an arteriovenous shunt may form in the remaining venous wall. Transvenous embolization may be an effective treatment.</p>

Journal

  • No Kekkannai Chiryo

    No Kekkannai Chiryo 8 (2), 63-67, 2023

    The Japanese Society for Neuroendovascular Therapy

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