Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Patient is status post median sternotomy . Marked enlargement of the cardiac silhouette persists , grossly stable . No focal consolidation is seen . No pleural effusion or pneumothorax is seen . Mediastinal contours are stable . No pulmonary edema is seen .
    OUTPUT:
    
Persistent marked enlargement of the cardiac silhouette . No pulmonary edema . No focal consolidation or pleural effusion . Stable mediastinum .