Tumour-like giant nerves in entrapment neuropathies

High resolution ultrasound has recently become a useful complementary method to electrophysiology for the confirmation of various entrapment neuropathies. The ultrasonographic signs of entrapment neuropathies include the segmental enlargement of the cross-sectional area (CSA) and the change of the echotexture of the nerve proximal and sometimes distal to the site of compression (Cartwright and Walker, 2013; Csillik et al., 2016). On longitudinal scans, an abrupt caliber change and a spindle-like segmental swelling of the nerve is typically seen.

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