Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac silhouette size is normal . The aorta is diffusely calcified and tortuous . The mediastinal contour is otherwise unremarkable . The pulmonary vascularity is normal . The lungs are clear . Hyperinflation of the lungs with relative attenuation of vascular markings towards the lung apices may suggest underlying emphysema . No pleural effusion or pneumothorax is visualized . There are cholecystectomy clips noted in the right upper quadrant of the abdomen .
    OUTPUT:
    
No acute cardiopulmonary abnormality .