Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright view of the chest . Diffuse pulmonary airspace opacity is concerning for edema . Difficult to exclude a superimposed pneumonia . Cardiomediastinal silhouette appears within normal limits . No large effusion or pneumothorax . Overlying EKG leads are present . Bony structures are intact .
    OUTPUT:
    
Diffuse pulmonary airspace opacity concerning for edema .