Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is moderately enlarged . There is mild pulmonary edema . As compared to prior chest radiograph from ___ , there is improved aeration of the right lung base . Persistent bibasilar opacities likely reflect chronic interstitial abnormality as on prior chest CT ___ . No new focal consolidations are noted . There are improved bilateral pleural effusions . There is no pneumothorax .
    OUTPUT:
    
Mild pulmonary edema . Improved right lung base opacity likely reflecting resolving pneumonia with persistent bibasilar interstitial opacities , which likely relate to known chronic lung disease .