Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable semi-erect chest film ___ at 07 : 55 is submitted .
    OUTPUT:
    
Overall cardiac and mediastinal contours are stable . There has been some interval improvement in the bilateral airspace process suggesting improving moderate pulmonary edema . No large effusions are seen . No pneumothorax is appreciated . Several rounded opacities overlying the stomach and in the right upper quadrant may reflect ingested pills .