Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single frontal chest radiograph demonstrates engorgement of the azygos vein and enlarged cardiac silhouette . There is haziness of the central pulmonary vasculature . Blunting of the bilateral left greater than right costophrenic angle suggests small effusion . No focal opacification concerning for pneumonia evident .
    OUTPUT:
    
Pulmonary edema likely due to congestive heart failure