Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A single AP radiograph of the chest was acquired . The lungs are clear . The cardiac and mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . There is no free air under the diaphragm . Rounded opacities projecting over the anterolateral aspects of the right third and fourth rib correspond to old rib fractures , as seen on CT from ___ .
    OUTPUT:
    
1 . No acute cardiac or pulmonary process . 2 . No free air under the hemidiaphragm .