Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy . In the interval since the prior study , there has been increase in the interstitial markings bilaterally and prominence of the hila suggesting moderate pulmonary edema . Small pleural effusion may also be present . Basilar opacities may relate to fluid overload ; however , infectious process is not excluded .
    OUTPUT:
    
Moderate pulmonary edema . Possible small pleural effusion seen posteriorly on the lateral view . Underlying basilar infection not entirely excluded .