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![Role of the neuromuscular ultrasound in the diagnostic of the multifocal motor neuropathy](https://image.oaes.cc/dd70e175-7950-4a5b-9f3d-36162219b3ca/84.fig.2.png)
Figure 2. Axial scan of the ulnar nerve in a multifocal motor neuropathy (MMN) patient in Guyon's canal (a), forearm (b), elbow (c) and upper-arm (d) showing a pathological cross sectional area enlargement at all anatomic sites, when compared to the reference values of our lab.[13] This finding may reflect the immune-mediated patchy multifocal demyelination occurring in MMN