Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . The heart size is mildly enlarged , but unchanged . Mediastinal and hilar contours are within normal limits . The pulmonary vascularity is normal . There is no focal consolidation , pleural effusion or pneumothorax . No acute osseous abnormalities seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .