Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is interval decrease in a very small left pneumothorax , which is now barely visible . The lungs remain otherwise essentially clear . The heart and mediastinal structures are unchanged . A mediastinal drain and chest tubes have been removed . A right internal jugular catheter remains in place .
    OUTPUT:
    
Interval decrease in small left apical pneumothorax . No other change .