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  • Title: Transvenous embolization of conus spinal arteriovenous malformation: illustrative case.
    Author: Anadani M, Lena J.
    Journal: J Neurosurg Case Lessons; 2023 Jan 16; 5(3):. PubMed ID: 36647251.
    Abstract:
    BACKGROUND: Spinal arteriovenous malformations (AVMs) are the most challenging spinal vascular malformations. Endovascular transarterial embolization of spinal AVM has been well described. However, transvenous embolization has not been previously reported. In this case report, the authors describe transvenous embolization of a recurrent intramedullary/conus spinal AVM that was previously deemed unamenable to endovascular therapy. OBSERVATIONS: A 30-year-old female presented with debilitating lumbar back pain and was found to have an intramedullary spinal AVM at the level of the conus medullaris. Initially, the AVM was treated with endovascular arterial embolization and subsequently with microsurgical resection. However, on follow-up angiography, the AVM had recurred. Further arterial embolization was deemed not possible because of anatomical challenges. After careful consideration, endovascular transvenous embolization was performed with successful occlusion of the AVM nidus. LESSONS: Transvenous embolization is an alternative route for endovascular treatment of spinal AVMs that have an accessible single draining vein.
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