Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable chest radiograph demonstrates persistent though minimally improved mild to moderate pulmonary edema with slightly improved aeration of the bilateral upper lungs , left greater than right . Bibasilar opacifications noted , likely combination of atelectasis and bilateral pleural effusions , though concurrent infectious process can not be appreciated . Endotracheal tube ends 2 .5 cm above the carina . The nasogastric tube is seen coursing into stomach and out of view .
    OUTPUT:
    
Minimally improved pulmonary edema with stable large bilateral pleural effusions . Bibasilar opacifications likely combination of atelectasis and effusion , though concurrent infectious process is a possibility in the appropriate clinical setting .