Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . Cardiac silhouette size is normal . Mediastinal and hilar contours are unremarkable , the lungs are clear . Pulmonary vascularity is normal . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .