Discussion of Cervical rib
- A cervical rib is a supernumerary or accessory rib arising from the seventh cervical vertebra.
- Occurs in approximately 0.5% of the population
- More common in females than in males
- Although a cervical rib is usually asymptomatic, it is the most important anatomic rib variant from a clinical standpoint because it can cause thoracic outlet syndrome by compression of the brachial plexus or subclavian vessels.
Patient #1: Bilateral cervical ribs
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 References for Cervical rib
- Yasuyuki Kurihara, Yoshiko K. Yakushiji, Junichi Matsumoto, Tohru Ishikawa, and Kazuaki Hirata. The Ribs: Anatomic and Radiologic Considerations. RadioGraphics 1999 19: 105-119.