Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . There are moderate bilateral pleural effusions with overlying atelectasis . Slight increase in the interstitial markings bilaterally may be due to mild interstitial edema . The cardiac silhouette is enlarged . The aorta is calcified and tortuous . The patient is status post median sternotomy and cardiac valve replacement .
    OUTPUT:
    
Enlarged cardiac silhouette , bilateral pleural effusions , and interstitial edema suggest CHF . Difficult to exclude underlying bibasilar consolidation .