Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy . The cardiac and mediastinal silhouettes are stable with the cardiac silhouette mild to moderately enlarged . No large pleural effusion is seen . There is increase in interstitial markings bilaterally suggesting a mild to moderate interstitial edema .
    OUTPUT:
    
Increased interstitial markings bilaterally suggesting mild interstitial edema .