Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A nasogastric tube is in - situ , the tip is in the stomach . Previous median sternotomy and evidence of coronary artery bypass grafting also noted . Lung volumes are slightly improved when compared to the prior study . Even allowing for the projection , the heart appears mildly enlarged . No consolidation , pneumothorax or pleural effusion seen .
    OUTPUT:
    
No significant interval change when compared to the prior study .