Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lordotic positioning . Inspiratory volumes are slightly low . Compared to the prior study , I doubt significant interval change . The cardiomediastinal silhouette is probably unchanged . Mild prominence of right paratracheal soft tissues is similar to prior , , though likely accentuated by lordotic positioning . Aorta is minimally unfolded . Heart size is at the upper limits of normal . There is upper zone redistribution , without overt CHF . Bibasilar atelectasis is slightly improved . No new focal opacity . No gross effusion . No pneumothorax detected .
    OUTPUT:
    
Mild upper zone redistribution without overt CHF . Minimal bibasilar atelectasis , improved compared with ___ . No new infiltrate and no effusion identified .