Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs remain hyperinflated . There is a large hiatal hernia with air - fluid level re - demonstrated . The cardiac silhouette is mild to moderately enlarged . No pulmonary edema is seen . No large pleural effusion or pneumothorax is seen . Mediastinal contours are unremarkable .
    OUTPUT:
    
Large hiatal hernia . COPD . No overt pulmonary edema .