Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy and cardiac valve replacement . Left - sided dual lead pacer device is stable in position . No focal consolidation is seen . There is minimal interstitial edema . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are stable .
    OUTPUT:
    
Very minimal interstitial edema . No focal consolidation . No pleural effusion .