Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is unchanged . The mediastinal and hilar contours are similar . Leftward deviation of the trachea due to enlargement of the right thyroid gland is re - demonstrated , better assessed on the recent CT . Lungs are hyperinflated with emphysematous changes again noted . Lungs are clear . Pulmonary vasculature is not engorged . No pleural effusion or pneumothorax is present . No acute osseous abnormality is visualized .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Emphysema .