Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The patient had prior sternotomy , probably for CABG . There is minimal cardiac congestion and there is no evidence of pneumonia . Small bilateral pleural effusions or pleural thickening is unchanged . There is no pneumothorax . Probable scarring at the right lung base is unchanged .
    OUTPUT:
    
There is no evidence of pneumonia . Mild congestion is stable .