Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy and probably coronary artery bypass graft surgery . The lung volumes are low . There is similar cardiomegaly . The cardiac , mediastinal and hilar contours appear stable . Fissures are thickened . There is no definite pleural effusion . Perihilar fullness and , although somewhat heterogeneous , widespread opacification with hazy pulmonary vasculature suggests moderate pulmonary edema . As seen previously , medial right basilar opacity is more confluent than elsewhere so coinciding infectious process is not excluded .
    OUTPUT:
    
1 . Findings suggest moderate pulmonary edema . 2 . Possible recurrent opacity at the right lung base ; developing pneumonia is not excluded .