Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post left thoracotomy and pneumonectomy . PA and lateral radiographs demonstrate continued and expected leftward shift of the mediastinum and elevation of the left hemidiaphragm with a slight increase in the amount of pleural fluid . There is persistent air within the pleural space as well . A large amount of subcutaneous emphysema in the left hemithorax extending into the neck is also unchanged . The right lung remains clear and there is no right - sided pneumothorax or effusion .
    OUTPUT:
    
Expected post-operative progressive changes following left pneumonectomy .