Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest were acquired . The cardiac silhouette remains moderately enlarged , but not significantly changed compared to the most recent radiograph from ___ . The mediastinal contours are otherwise normal . There is minimal right lower lobe atelectasis . The lungs are otherwise clear . Marked tracheomalacia is redemonstrated . There are no pleural effusions or pneumothorax . Deformity of the left clavicle relates to remote trauma .
    OUTPUT:
    
1 . No acute cardiac or pulmonary findings . 2 . Moderate enlargement of the cardiac silhouette , unchanged . 3 . Marked tracheomalacia .