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