Chest x-ray examination showed that the ninth costal cortex of the left chest was discontinuous.

Discontinuity of rib cortex on chest film generally refers to tearing fracture of rib.

I don't know how old you are. We occasionally see rib fractures caused by osteoporosis and severe cough in the elderly, but it is rare.

Finally, whether there is a history of trauma, the corresponding ribs are painless. I don't think this is a fracture. The effect of X-ray photography is influenced by many factors. Although the film used to observe the lungs can also see the ribs, the effect is not good, and the bone cortex is discontinuous, which may only be caused by lung texture, soft tissue artifacts and overlapping ribs.

As for asking you to do another CT scan, it's a bit too much. Even if it is a lacerated fracture, the plain film only shows that the bone cortex is not connected and there is no clear and sharp fracture line, so how to treat it is nothing more than sticking a tape to fix it! Even ignore it! ~~