Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The patient is status post median sternotomy and aortic valve replacement . There is very minimal interstitial edema . No focal consolidation or pleural effusion is seen . The cardiac and mediastinal silhouettes are stable with the cardiac silhouette mildly enlarged . Mediastinal contours are stable .
    OUTPUT:
    
Minimal interstitial edema . Persistent mild cardiomegaly .