Engorged and tortuous intradural filum terminale vein as a sign of a sacral dural arteriovenous malformation

Eur J Radiol. 2002 Nov;44(2):152-5. doi: 10.1016/s0720-048x(02)00010-4.


Sacral spinal dural arteriovenous (AV) malformation is rare and its clinical features are not specific to differentiate sacral dural AV malformation from the superiorly located ones. A sacral dural AV malformation, therefore, is usually diagnosed after negative thoracic and lumbar arteriograms. In this report, we propose a myelographic or magnetic resonance (MR) sign of engorged and tortuous intradural filum terminale vein as an indication of a sacral dural AV malformation. When this sign is seen, pelvic arteriography should be performed first.

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Arteriovenous Malformations / diagnosis*
  • Arteriovenous Malformations / therapy
  • Cauda Equina / blood supply*
  • Cauda Equina / diagnostic imaging
  • Cauda Equina / pathology
  • Dura Mater / blood supply
  • Dura Mater / diagnostic imaging
  • Dura Mater / pathology
  • Embolization, Therapeutic
  • Humans
  • Magnetic Resonance Imaging
  • Male
  • Myelography
  • Sacrococcygeal Region
  • Veins / abnormalities