Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The aorta is mildly tortuous . The mediastinal and hilar contours otherwise are within normal limits . The pulmonary vascularity is normal . The lungs are clear . No pleural effusion or pneumothorax is present . No acute osseous abnormalities are present .
    OUTPUT:
    
No acute cardiopulmonary abnormality .