Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is widespread bilateral airspace opacity , with normal lung volumes . Small bilateral pleural effusions are present , with a probable loculated effusion resulting in well defined right lower lobe opacity . The cardiac silhouette is mildly enlarged , in this patient with changes of median sternotomy and CABG . There is no pneumothorax .
    OUTPUT:
    
Mild pulmonary edema , with probable loculated components to pleural effusion , although infection is not excluded and followup is recommended to exclude pneumonia .