Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable upright chest radiograph ___ at 07 :43 is submitted .
    OUTPUT:
    
Right - sided single lead pacer remains in place with the lead terminating over the expected location of the right ventricle . A valvular ring remains in place . The heart remains stably enlarged . There is improving but residual mild pulmonary edema . No developing airspace consolidation to suggest pneumonia . Patchy opacities at both bases are felt to likely reflect atelectasis . No pneumothorax .