Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 02 :37 is submitted .
    OUTPUT:
    
Layering bilateral effusions with associated patchy bibasilar airspace disease likely reflecting compressive atelectasis . Persistent mild pulmonary and interstitial edema . Cardiac and mediastinal contours are likely unchanged . Lung volumes remain low . No pneumothorax .