Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The right pleural effusion has decreased in size compared to the prior study . There is a persistent airspace opacity in the right mid lung . Atelectasis at the left base is also unchanged . There is no pneumothorax . Heart size is mildly enlarged and unchanged . A right chest tube is unchanged in position . The VP shunt is unchanged .
    OUTPUT:
    
Interval decrease in size in the right pleural effusion and persistent right mid lung airspace opacity .