Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post sternotomy . The heart is enlarged , although the cardiac silhouette is not optimally assessed due to superimposed diffuse pulmonary opacification suggesting moderate pulmonary edema . A pleural effusion of small - to - moderate size is suspected on the right side . Hazy opacification of the left lung base is indeterminate but potentially reflects an effusion in part . There is apparently an opacity with air bronchograms in the retrocardiac region . The lung volumes are low .
    OUTPUT:
    
1 . Findings suggesting moderate pulmonary edema with a pleural effusion suspected on the right . 2 . Low lung volumes with left basilar opacity including air bronchograms . Although pneumonia is not excluded , atelectasis could provide an alternative explanation . Clinical correlation is recommended and consideration of followup radiographs , preferably with PA and lateral technique , if needed clinically .