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. 2020 May 27;7(4):e771. doi: 10.1212/NXI.0000000000000771

Figure 1. Somatosensory evoked potentials (A and B) and MRIs (C–F) of 2 contactin-1 IgG patients demonstrating favorable response to immunotherapy.

Figure 1

Right median somatosensory evoked potential demonstrating prolongation of N9 (arrow) to N13 (arrowhead) interval consistent with cervical sensory root involvement (A), which improves after treatment with IV immunoglobulin (B). Enhancement of the cauda equina on (C) sagittal and (D) axial postgadolinium T1 sequences, which resolves postimmunotherapy (E and F). IVIG = IV immunoglobulin; IVMP = intravenous methylprednisolone; MMF = mycophenolate mofetil.