Section Editor: Sandy Cheng-Yu Chen, M.D.
Taipei Medical University Hospital, Taipei, Taiwan
Guillain-Barré syndrome, also known as acute inflammatory demyelinating polyradiculoneuropathy (AIDP), is a rapidly progressive inflammatory peripheral polyneuropathy. The clinical presentation of AIDP is usually characterized by symmetric ascending, rapidly progressive paralysis of the extremities. The classic MR imaging findings are symmetric thickening and marked enhancement of the ventral spinal nerve roots, especially in the region of the cauda and conus medullaris (B and C, arrows). Enhancement of cranial nerves, especially the facial nerves, has been described. Effective treatment includes plasmapheresis and intravenous immunoglobulin therapy.