Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest are obtained . There is mild - to - moderate diffuse bilateral interstitial edema . Right pleural effusion with overlying atelectasis . Patient is status post median sternotomy and CABG . Mild - to - moderate cardiomegaly persists . Degenerative changes are seen along the spine .
    OUTPUT:
    
Moderate interstitial pulmonary edema . Right pleural effusion with overlying atelectasis . Persistent cardiomegaly .