Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: On volumes are slightly low . Bilateral central edema is moderate with increased interstitial prominence . The heart is probably or mildly enlarged , but difficult to accurately assess on an AP radiograph . Central pulmonary vasculature is engorged . There is fullness of days itis vein . No pleural effusion . No pneumothorax . Degenerative changes in the shoulders are again noted .
    OUTPUT:
    
Mild to moderate edema .