Lumbar canal stenosis (CT myelogram)

Case contributed by Henry Knipe


Bilateral lower limb radiculopathy. MRI contra-indicated due to MRI-unsafe implant.

Patient Data

Age: 85 years
Gender: Female



CT-guided lumbar puncture at L5-S1 and instillation of radiopaque contrast into the thecal sac.

Severe spinal canal stenosis (predominantly from disc) at L3-4 with very dense contrast distal and less dense contrast more proximal. Serpentine filling defects proximal to the canal stenosis likely represent redundant cauda equina and/or venous congestion.

Mild spinal canal stenosis at L4-5.

Chronic L1 compression fracture.

Case Discussion

CT myelography is a good alternative when patient's have symptoms that might require intervention and MRI is contraindicated.

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