Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aortic knob is densely calcified . Mediastinal and hilar contours are unchanged . Pulmonary vasculature is normal . Lungs are hyperinflated without focal consolidation . No pleural effusion or pneumothorax is demonstrated . Clips are again noted projecting over the left breast . Fusion hardware with vertebral cage device is again noted at the thoracolumbar junction .
    OUTPUT:
    
No acute cardiopulmonary abnormality .