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  • Title: Metameric spinal AVM: Long-term symptomatic relief achieved by embolization of the extradural component.
    Author: Drake B, Patro S, Quateen A, Cora EA, Finitsis S, Sinclair J, Lesiuk H, Iancu D.
    Journal: Interv Neuroradiol; 2019 Aug; 25(4):469-473. PubMed ID: 30922201.
    Abstract:
    BACKGROUND: Metameric spinal cord arteriovenous malformations (AVMs) are rare lesions characterized by an intradural and extradural component. They are difficult to treat surgically by the endovascular route. We report a case in which symptomatic relief was achieved by embolization of the extradural component only. CASE PRESENTATION: A 35-year-old woman presented with acute worsening of back pain, weakness in the left leg and urinary retention. Spinal angiography showed a metameric spinal cord AVM with partial common venous drainage of the extradural and intradural components. CONCLUSIONS: Targeted embolization of the extradural component led to dramatic improvement of the patient's symptoms, probably by achieving venous decongestion. She remains neurologically stable at two years' follow-up.
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