Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 09 :06 is submitted .
    OUTPUT:
    
Improving pulmonary edema , although there is residual asymmetric edema , right greater than left . Bilateral layering effusions , right greater than left . Bibasilar airspace opacities favoring atelectasis , although pneumonia can not be excluded . No pneumothorax . Status post median sternotomy with valve replacement and stable postoperative cardiac and mediastinal contours . Right internal jugular introducer remains in place . No pneumothorax .