Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared to chest radiograph from 8 hours prior , there is no significant change . The lung volumes are low , accentuating the heart size and interstitial markings . The lungs are otherwise clear . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . No pleural effusion or pneumothorax is seen . There are no acute osseous abnormalities .
    OUTPUT:
    
No pleural effusion . No significant interval change .