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Cauda equina syndrome complicating ankylosing spondylitis: MR features
D J Rubenstein1, O Alvarez, B Ghelman
1Department of Radiology, State University of New York, Stony Brook, Long Island.
Journal of Computer Assisted Tomography
|May 1, 1989
Summary
Cauda equina syndrome can complicate ankylosing spondylitis, leading to bony erosions. Magnetic resonance imaging effectively visualized these changes and associated arachnoid diverticula without contrast injection.
Area of Science:
- Neurology
- Rheumatology
- Radiology
Background:
- Ankylosing spondylitis is a chronic inflammatory disease affecting the spine.
- Cauda equina syndrome is a rare but serious condition affecting the nerves at the end of the spinal cord.
Observation:
- A case of cauda equina syndrome in a patient with long-standing ankylosing spondylitis was observed.
- Computed tomography (CT) revealed bony erosions in the affected spinal region.
- Magnetic resonance (MR) imaging demonstrated arachnoid diverticula within these erosions.
Findings:
- MR imaging provided detailed visualization of the bony erosions and associated arachnoid diverticula.
- The use of MR imaging eliminated the need for intrathecal contrast medium injection, simplifying the diagnostic process.
Implications:
- This case highlights a rare complication of ankylosing spondylitis.
- MR imaging is a valuable tool for diagnosing cauda equina syndrome secondary to bony erosions in ankylosing spondylitis.
- Non-contrast MR imaging can be sufficient for diagnosis, improving patient safety and comfort.