Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The large hiatal hernia is re - demonstrated . Hilar contours are normal . Pulmonary vasculature is not engorged . Lungs are clear . No pleural effusion or pneumothorax is seen . There are mild degenerative changes in the lower thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality . Large hiatal hernia .