Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Low lung volumes are present . The heart size is mildly enlarged with a left ventricular predominance but unchanged . The mediastinal and hilar contours are stable . Lungs are clear and the pulmonary vascularity is normal . No pleural effusion or pneumothorax is identified . No acute osseous abnormalities seen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .