Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Interval insertion of a left - sided pigtail catheter with decrease in the left - sided pleural effusion . No pneumothorax . Left retrocardiac opacity has improved . The right lung remains clear . Right - sided Port - A - Cath with the tip in the right atrium .
    OUTPUT:
    
No pneumothorax , post left - sided chest tube placement with decrease in left pleural effusion .