Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is mildly enlarged but unchanged . The mediastinal and hilar contours are similar . No focal consolidation , pleural effusion or pneumothorax is detected . Lungs remain hyperinflated with flattening of the diaphragms suggestive of underlying COPD . Minimal linear opacities in the lung bases likely reflect areas of atelectasis . No acute osseous abnormalities visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality . COPD .