Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest film dated ___ at 05 :40 is submitted .
    OUTPUT:
    
Overall , there has been no significant interval change in the diffuse bilateral parenchymal airspace opacities . Cardiac and mediastinal contours are stable . The small bilateral pleural effusions on chest CT dated ___ are not well appreciated on the plain film image . No pneumothorax .