Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A newly placed chest tube ends in the left mid lung . There is extensive subcutaneous and mediastinal air , limiting evaluation of the lungs . The cardiomediastinal silhouette is not significantly changed . There is no large pleural effusion .
    OUTPUT:
    
Limited evaluation of the lungs due to extensive subcutaneous emphysema . Newly placed chest tube ending in the left midlung .