Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The ET tube , left subclavian central line , NG tube , and left chest tube are in adequate positions , unchanged from prior exam . The lungs are well expanded and clear . The left pneumothorax has decreased in size from prior exam . No pleural effusion is seen . The cardiomediastinal silhouette is unremarkable . Subcutaneous emphysema is again seen in the left lateral chest wall .
    OUTPUT:
    
Interval decrease in size in the left pneumothorax .