Redundant lumbar nerve root syndrome: myelographic features

Area of Science:

• Radiology
• Neurosurgery
• Spinal Imaging

Background:

• Redundant lumbar nerve root syndrome is a rare condition.
• Myelography is a key diagnostic tool for spinal abnormalities.

Purpose of the Study:

• To describe the myelographic findings of redundant lumbar nerve roots.
• To differentiate this condition from other intradural pathologies.

Main Methods:

• Positive-contrast myelography was performed on nine patients.
• Metrizamide and iophendylate were used as contrast agents.

Main Results:

• Serpiginous intradural filling defects were observed.
• These defects were associated with spinal stenosis and extradural block.
• Redundant nerve roots were located on the cephalic side of the block.
• Eight patients presented with pseudoclaudication.

Conclusions:

• Characteristic myelographic patterns of redundant nerve roots can be identified.
• Recognition of this pattern is crucial for accurate diagnosis and differentiation from vascular abnormalities.