Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A BB marker was placed in the left mid thorax at the site of patient 's pain . No displaced rib fracture is identified . Degenerative changes are seen in both shoulder joints . Cardiomediastinal and hilar contours are normal . There is no pleural effusion or pneumothorax . There is no focal consolidation concerning for pneumonia .
    OUTPUT:
    
No displaced rib fractures or other acute cardiothoracic process .