Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison to the prior radiograph on ___ , there are new parenchymal opacities in the bilateral lung bases , most reflective of pulmonary edema . No pneumothorax . No large pleural effusion . Heart size appears mildly enlarged .
    OUTPUT:
    
New bibasilar parenchymal opacities , due to pulmonary edema .