Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP portable chest radiograph demonstrates unremarkable mediastinal contours . Cardiac silhouette is enlarged . Hazy pulmonary vasculature is identified with faint patchy opacities in the perihilar and upper lung zones suggests a mild degree of pulmonary edema . Retrocardiac opacities likely represent atelectasis , though developing infectious process can not be excluded in the appropriate clinical setting . Minimal blunting of the right costophrenic angle may reflect a small pleural effusion though this area is not well evaluated due to overlying medical devices . No osseous abnormalities identified .
    OUTPUT:
    
Mild pulmonary edema with retrocardiac capacity likely representing atelectasis though can not exclude infection . Possible small riht pleural effusion .