Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are noted to be mildly hyperinflated . No focal consolidation , pleural effusion , pneumothorax , or pulmonary edema is seen . The heart size is normal . Mediastinal contours are normal . A retrocardiac air - fluid level of suggestive of a moderate sized hiatal hernia . There is no evidence of pneumoperitoneum .
    OUTPUT:
    
1 . No radiographic evidence for acute cardiopulmonary process . 2 . Moderate sized hiatal hernia .