Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no significant change from chest radiograph from 1 hr prior . The appearance of the lungs is stable . The cardiac and mediastinal silhouettes are stable . No large pleural effusion or pneumothorax . No evidence of free air beneath the diaphragm .
    OUTPUT:
    
No significant change from chest radiograph 1 hr prior .