Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Both lungs are well expanded and clear . There are no lung opacities concerning for pneumonia or pulmonary edema . Heart size is mildly enlarged and stable since ___ . Mediastinal and hilar contours are unchanged . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
No acute cardiopulmonary process .