Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal radiograph of the chest . An ET tube ends 5 .5 cm above the carina . An enteric tube passes below the diaphragm and out of view . Heart is top normal in size . Extensive , symmetric airspace opacification is most likely moderately severe pulmonary edema . No pleural effusions or pneumothorax . Calcified lymph nodes are noted in the right hilum .
    OUTPUT:
    
Moderate pulmonary edema .