Metameric spinal AVM: Long-term symptomatic relief achieved by embolization of the extradural component

Interv Neuroradiol. 2019 Aug;25(4):469-473. doi: 10.1177/1591019919828135. Epub 2019 Mar 28.


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.

Keywords: Arteriovenous malformation; embolization; juvenile; metameric; spinal cord.

Publication types

  • Case Reports

MeSH terms

  • Adult
  • Arteriovenous Malformations / therapy*
  • Embolization, Therapeutic*
  • Female
  • Humans
  • Remission Induction
  • Spinal Cord / blood supply*
  • Time Factors