Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . Aortic knob is calcified . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is normal . Lungs are clear . No pleural effusion or pneumothorax is detected . There are mild degenerative changes noted in thoracic spine . Multiple clips are again noted in the right upper quadrant of the abdomen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .