Guillain-Barré syndrome MRI

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Priyamvada Singh, MBBS [2]

Overview

Guillain-Barré syndrome (GBS) is usually diagnosed clinically.

MRI

• The MRI findings in GBS are non-specific
• It is used as an adjunct to clinical presentation and laboratory tests
• Inflammatory conditions present as nerve root enhancement on MRI. This is due to the loss of blood brain barrier that accompanies an inflammatory condition.
• Features on MRI suggestive of GBS are:
  • Selective anterior nerve root enhancement
  • Nerve root enhancement of the cauda equina nerve roots are also common