Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a large hiatal hernia consistent with a prior CT on ___ . There is no focal consolidation , pleural effusion , or pneumothorax . The heart size is within normal limits . The cardiac , hilar , and mediastinal contours are within normal limits .
    OUTPUT:
    
Large hiatal hernia , unchanged from ___ .