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Radiographic features of cauda equina syndrome complicating ankylosing spondylitis
J P Normand1, M Dufour, J Y Lang
1Département de radiologie, Hôpital Saint-François d'Assise, Québec.
Summary
Cauda equina syndrome is a rare complication of ankylosing spondylitis. Magnetic resonance imaging (MRI) provides a definitive, noninvasive method for diagnosing this condition.
Area of Science:
- Neurology
- Rheumatology
- Radiology
Background:
- Ankylosing spondylitis (AS) is a chronic inflammatory disease primarily affecting the spine.
- Cauda equina syndrome (CES) is a serious neurological condition involving compression of the nerve roots in the lumbar spine.
- CES is an uncommon but significant complication of advanced AS.
Observation:
- A 56-year-old male patient with ankylosing spondylitis presented with symptoms suggestive of cauda equina syndrome.
- Diagnostic imaging included plain radiography, computed tomography (CT), and magnetic resonance imaging (MRI).
Findings:
- Radiography and CT demonstrated characteristic spinal changes associated with ankylosing spondylitis.
- MRI revealed specific features pathognomonic for cauda equina syndrome secondary to AS.
- The MRI findings allowed for accurate, noninvasive diagnosis of CES in this patient.
Implications:
- This case highlights the importance of considering CES in AS patients presenting with relevant neurological deficits.
- MRI is crucial for the early and accurate diagnosis of CES in the context of ankylosing spondylitis.
- Timely diagnosis and management of CES can prevent permanent neurological damage.