Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse subcutaneous air has improved , and bilateral effusions have not changed . No pneumothorax is visualized on this radiograph . No focal consolidation is seen , and the reticular nodular pattern is unchanged and better assessed on recent CT scan . The tracheostomy tube ends in the distal trachea , and the cardiac and mediastinal contours are normal .
    OUTPUT:
    
No pneumothorax visualized on this radiograph .