Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable supine frontal view of the chest . The lung volumes are very low . There is diffuse airspace opacity in the right lung . Bilateral interstitial prominence likely represents mild pulmonary edema . No large pleural effusion or pneumothorax is seen . The heart size is accentuated due to low lung volumes , but is probably normal . The mediastinal contours are normal .
    OUTPUT:
    
1 . Diffuse airspace opacities in the right lung could represent aspiration , infection or less likely hemorrhage . 2 . Mild edema is most likely present .