Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 08 : 22 is submitted .
    OUTPUT:
    
Right PICC line unchanged in position . Small bilateral layering effusions with patchy bibasilar airspace disease likely reflecting partial lower lobe atelectasis . Stable postoperative cardiac and mediastinal contours status post median sternotomy for CABG . No pneumothorax . No pulmonary edema .