Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 10 : 19 is submitted .
    OUTPUT:
    
Bibasilar pleural pigtail catheters remain in place . A small layering left effusion remains . There is persistent patchy opacities at the right base as well as in the retrocardiac region which could reflect lower lobe atelectasis although pneumonia or aspiration should also be considered . When compared to the prior study ___ at 02 :27 , there is a suggestion that there may be superimposed mild interstitial edema at the current time . No pneumothorax . Left subclavian PICC line unchanged in position .