Cervical rib

Last revised by Dr Yuranga Weerakkody on 09 Jul 2021

Cervical ribs are supernumerary or accessory ribs arising from the seventh cervical vertebra. They occur in ~0.5% of the population, are usually bilateral, but often asymmetric 2, and are more common in females.

Related pathology

Although cervical ribs are usually asymptomatic, they are the most important anatomic rib variant clinically, because they can cause thoracic outlet syndrome by compression of the brachial plexus or subclavian artery/vein.

Differential diagnosis

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Cases and figures

  • Case 1
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  • Case 2
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  • Case 3
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  • Case 4: rudimentary asymmetric cervical ribs
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  • Case 5
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  • Case 6
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  • Case 7: bilateral
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  • Case 8: bilateral on multiplanar CT
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  • Case 9
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  • Case 10
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  • Case 11: on left
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  • Case 12
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  • Case 13: bilateral
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  • Case 14
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