Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again seen are 2 right - sided pigtail catheters . There has been some interval decrease in the right pleural effusion , however it is still large . The effusion surrounds the right lung . However , the right lung appears better aerated than on the study from the prior day . There is still continues to be a large amount of volume loss the right lower lobe . There is some mild mediastinal shift to the right . The left lung is clear
    OUTPUT:
    
Slight decrease in large right effusion .