Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Multiple overlying EKG leads limit the assessment . The heart is markedly enlarged as on prior . Bilateral ground - glass opacities likely reflect pulmonary edema though superimposed pneumonia difficult to exclude . No large effusions or pneumothorax seen . Bony structures appear intact .
    OUTPUT:
    
Marked cardiomegaly with mild - to - moderate pulmonary edema . Difficult to exclude a superimposed pneumonia .