Cauda equina syndrome due to posttraumatic syringomyelia in conus medullaris – A case report

Background: Most posttraumatic syringomyelias occur in the cervical or thoracic spinal cord, where they contribute to myelopathic deficits. Here, a 40-year-old patient presented with the left leg monoparesis due to syringomyelia involving the conus medullaris 10 years after an L2 vertebral “crush” fracture. Case Description: Ten years following an L2 vertebral “crush” fracture, a 40-year-old male presented with the new onset of left lower leg paresis. The magnetic resonance imaging showed a T12–L1 syrinx associated with accompanying high-intensity areas above the syrinx located between the T11 and T12 levels. One month after placing a syringosubarachnoid (SS) shunt, both the syrinx and high-intensity area rapidly disappeared, and the left distal motor weakness resolved. Conclusion: Ten years following an L2 “crush” fracture, a 40-year-old male presented with the new onset of a cauda equina syndrome secondary to a posttraumatic T12–L1 syringomyelia causing expansion of the conus medullaris.