Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Status post median sternotomy and mitral valve repair . Grossly unchanged pulmonary edema as well as bilateral pleural effusions with adjacent atelectasis . The size of the cardiac silhouette is enlarged but unchanged . No pneumothorax is identified .
    OUTPUT:
    
No significant interval change since the prior exam . Persisting pulmonary edema and small bilateral pleural effusions .