PMC6700242_01
(A) Axial fluid attenuated inversion recovery (FLAIR) image demonstrated cortico-subcortical atrophy and chronic cerebrovasculopathy. (B) Diffusion weighted imaging (DWI) did not show acute lesions. (C) Neurophysiological studies showed absence of the left sural and the right ulnar sensory nerve action potentials, mildly increased latency of the facial nerve CMAP, and normal repetitive facial nerve stimulation.
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F1
Another electromyography was repeated 3 days later, displaying a predominantly sensory polyradiculoneuropathy, characterized by increased facial nerve latency and absence of sural, ulnar, and radial sensory nerve action potentials (SNAP) (Figure 1C); ulnar nerve F-wave seemed not clearly detectable.