Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No focal consolidation , edema , effusion , or pneumothorax . The heart is moderately enlarged , unchanged . Retrocardiac opacity with air - fluid level projecting just to the left of midline is consistent with a moderate hiatal hernia , unchanged . Mild left lower lobe opacity is likely atelectasis . The mediastinum is not widened . Aortic knob calcifications are minimal .
    OUTPUT:
    
1 . No focal pneumonia or edema . 2 . Moderate cardiomegaly , unchanged . 3 . Moderate hiatal hernia .