Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is moderately enlarged . The mediastinal and hilar contours are within normal limits . Again seen is a retrocardiac opacity , consistent with known large hiatal hernia . Lungs are hyperinflated , in keeping with known diagnosis of COPD . There is no large pleural effusion or pulmonary edema . No focal consolidation concerning for pneumonia .
    OUTPUT:
    
1 . No focal consolidation concerning for pneumonia . 2 . Large hiatal hernia .