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Arachnoiditis ossificans and syringomyelia: a unique case report.
R J Kahler1, N W Knuckey, S Davis
1Department of Neurosurgery, Sir Charles Gairdner Hospital, Queen Elizabeth II Site, Perth W.A., Australia. rkahler@space.net.au
Summary
A rare case of syringomyelia caused by spinal arachnoiditis ossificans is presented. Computed tomography imaging proved superior to MRI in detecting this spinal cord abnormality.
Area of Science:
- Neurosurgery
- Neurology
- Radiology
Background:
- Syringomyelia is a rare condition characterized by a fluid-filled cyst within the spinal cord.
- Spinal arachnoiditis ossificans is a challenging condition involving bone formation within the spinal arachnoid mater.
Observation:
- A 62-year-old male presented with progressive quadriparesis, indicating significant neurological deficit.
- Initial magnetic resonance imaging (MRI) of the spine suggested a spinal cord syrinx but missed extensive arachnoiditis ossificans.
- Surgical exploration during syringopleural shunt insertion revealed the missed arachnoiditis ossificans.
Findings:
- A postoperative computed tomography (CT) scan definitively identified the arachnoiditis ossificans and its full extent.
- This case highlights the limitations of MRI in visualizing ossified lesions within the spinal canal.
- CT imaging is crucial for accurate diagnosis and surgical planning in suspected spinal arachnoiditis ossificans.
Implications:
- Accurate diagnosis of spinal arachnoiditis ossificans is critical for managing syringomyelia.
- CT imaging should be considered in cases where MRI findings are inconclusive or do not correlate with clinical presentation.
- This case contributes to understanding the rare etiology of syringomyelia and informs diagnostic strategies.