Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged , unchanged . Mediastinal and hilar contours are normal . Lungs are clear . Previously noted right lower lobe rounded opacity is not seen on the current radiograph . Pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . No acute osseous abnormalities present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .