Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is normal . A moderate to large size hiatal hernia is noted . The hilar contours are unremarkable . Lungs are clear . Pulmonary vasculature is normal . No pleural effusion , focal consolidation or pneumothorax is present .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Moderate to large size hiatal hernia .