Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is no pleural effusion or pneumothorax . The lungs appear clear . There are new but probably subacute or older nondisplaced fractures involving several right lateral ribs , noting callus ; these are difficult to visualize in detail but probably involve the seventh through ninth ribs .
    OUTPUT:
    
No evidence of acute cardiopulmonary disease . Non-displaced right - sided rib fractures , probably of subacute or older age , but new since ___ .