Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient is status post median sternotomy and CABG . The cardiac silhouette is mild to moderately enlarged . Mediastinal contours are stable . There is mild pulmonary vascular congestion . No focal consolidation or large pleural effusion is seen . There is no evidence of pneumothorax .
    OUTPUT:
    
Enlarged cardiac silhouette and minimal to mild pulmonary vascular congestion .