Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and show diffuse ground glass opacity . The cardiac silhouette is enlarged . The mediastinal silhouette is normal . The right hilar contour is prominent , unchanged . A left - sided pacer terminates with its leads in the right atrium , right ventricle , and coronary sinus .
    OUTPUT:
    
Moderate pulmonary edema .