The diagnosis of rib metastases is not usually confirmed by a bone scan test. A bone scan involves injecting nuclides into a vein and using a machine to take pictures of the bones throughout the body to see if the nuclides have built up in any part of the bone. In addition, although bone scans can help diagnose malignant diseases, their imaging characteristics are not unique to malignant tumors. When bone growths or fractures occur in the bones, there can also be a concentration of radioactivity on the bone scan image, so bone scans are not able to confirm the diagnosis of bone metastases. Generally, bone lesions can be detected on bone scan, and after bone lesions are detected, patients should follow the doctor’s instructions to do X-ray, magnetic resonance and other examinations, and if necessary, PET-CT examination and histopathological examination can also be done to help confirm the diagnosis of whether or not rib metastasis has occurred.