Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior study , the position of the right pleural catheter is unchanged . The degree of right pleural effusion is minimally decreased . The amount of aerated right lung is slightly decreased , possibly due to atelectasis and lower lung volume . The left lung is clear aside from poor inspiratory volume .
    OUTPUT:
    
Interval decrease in lung volumes with apparent improvement in right pleural effusion and unchanged position of right pleural catheter . Slightly more atelectasis is seen at the right lung .