Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 06 :43 is submitted .
    OUTPUT:
    
The cardiac and mediastinal contours appear stably enlarged with particular prominence of the right hilum which could be all vascular although lymphadenopathy should also be considered . The pulmonary edema has resolved , although there is mild cephalization of the vasculature consistent with pulmonary venous hypertension . Patchy retrocardiac opacity could reflect atelectasis in the setting of a layering effusion , although pneumonia or aspiration should also be considered . No pneumothorax .