Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Chest PA and lateral radiograph demonstrates unremarkable mediastinal , hilar and cardiac contours . Hazy pulmonary vasculature suggests mild pulmonary edema . Bibasilar opacifications may be a combination of atelectasis and bilateral pleural effusions , right greater than left . However , can not exclude an infectious process in the appropriate clinical setting .
    OUTPUT:
    
Bibasilar opacifications likely represent combination of effusions and possibly atelectasis versus pneumonia . Background mild pulmonary edema .