Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Mild enlargement of the cardiac silhouette is unchanged . Mediastinal and hilar contours are similar with re - demonstration of leftward deviation of the trachea due to a previously noted enlarged right thyroid gland . Pulmonary vasculature is not engorged . Lungs remain hyperinflated with emphysematous changes again noted in the upper lobes . No focal consolidation , pleural effusion or pneumothorax is present . Minimal atelectasis is noted in the lung bases . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Emphysema .