Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged but unchanged . The mediastinal and hilar contours are normal . The pulmonary vascularity is not engorged . There is no focal consolidation , pleural effusion or pneumothorax . Minimal atelectasis is seen in both lung bases . No acute osseous abnormality is detected .
    OUTPUT:
    
No acute cardiopulmonary abnormality .