Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph ___ at 12 : 12 is submitted .
    OUTPUT:
    
The right hemidiaphragm remains elevated . A slightly more rounded contour to the right heart border is felt to correspond to a prominent pericardial fat pad when correlated with images from the outside abdominal CT dated ___ . There is persistent but improving infrahilar patchy opacity likely reflecting resolving atelectasis . No new airspace consolidation is seen . Crowding of the pulmonary vasculature in the setting of low lung volumes with no overt pulmonary edema . No pneumothorax . Possible small right effusion .