Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: No lung volumes are stable . No evidence of appreciable vascular congestion . The cardiomediastinal and hilar contours are stable . A moderate - to - large hiatal hernia is present . The pleural surfaces are normal . Interval removal of right IJ catheter . No evidence of pneumothorax .
    OUTPUT:
    
Moderate to large hiatal hernia . No acute cardiopulmonary process .