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. 2021 Dec 20;9:100392. doi: 10.1016/j.ejro.2021.100392

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© 2021 The Authors

This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Fig. 16 — A 19-year-old patient presented with pain in the arm, forearm, and hand. A neurological examination showed a slight loss of strength in the intrinsic muscles and suspected thoracic outlet syndrome. Nerve conduction studies and EMG revealed the involvement of the lower trunk and medial cord. MRI of the BP with (a) T1-weighted TSE imaging, (b) T2 weighted TSE, and (c-g) MR neurography with (c, e, f, g) MIP reconstructions showed asymmetry of the BP (curved arrows) because of the presence of the cervical rib (straight arrow) on the right side, which is about 25 mm long. On the right side, the lower trunk (curved arrow) was displaced compared with the left side (curved dashed arrow). The medial cord and the median and ulnar nerves were swollen (straight dashed arrow).