Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to the prior radiograph , lung aeration has improved . Right middle lobe atelectasis is present , and the right hilus is indistinct . Further details were gleaned on the CT chest from ___ . The left lung is clear without pleural effusions .
    OUTPUT:
    
1 . Right middle lobe atelectasis is present with an indistinct right hilus . These are better evaluated on the prior CT chest from ___ . 2 . Left lung is clear .