Presentation
Evaluate for chest pain.
Patient Data
Age: 20 years
Gender: Female
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Info

Bilateral cervical ribs result in 13 pairs of ribs. Easy to count all 13 ribs on left side.
Case Discussion
Cervical ribs are usually an incidental finding and usually has no problems. They occur in ~0.5% of the population, and are more common in females.
They can cause thoracic outlet syndrome by compression of the brachial plexus or subclavian vessels.