Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Heart size remains mildly enlarged . The mediastinal and hilar contours are unremarkable . The pulmonary vasculature is not engorged . No focal consolidation , pleural effusion or pneumothorax is seen . Minimal atelectasis is noted in the retrocardiac region . No acutely displaced fractures are identified .
    OUTPUT:
    
Low lung volumes without acute cardiopulmonary process .