Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided . The lungs are hyperinflated and diaphragms flattened . A linear scar at the left lung base is unchanged . Otherwise , lungs are grossly clear . No pleural effusion or pneumothorax . Biapical pleural and parenchymal scarring is unchanged Hilar contours are normal . A hiatal hernia is noted .
    OUTPUT:
    
1 . No acute cardiopulmonary process . 2 . Emphysema . 3 . Moderate hiatal hernia .