Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A new pigtail catheter projects over the right mid to lower lung . Increased rightward midline shift of the trachea and mediastinum suggests interval decrease in the size of a large right pleural effusion causing near complete opacification of the right lung without compensatory re-expansion of the right lung . Right upper lung aeration is slightly increased . There is no pneumothorax . The left lung remains clear .
    OUTPUT:
    
New right chest pigtail catheter with slightly decreased right pleural effusion and increased right upper lung aeration . No pneumothorax .