Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The aorta remains tortuous with mild atherosclerotic calcifications . The pulmonary vasculature normal . Hilar contours are unremarkable . Lungs are clear . No pleural effusion or pneumothorax is seen . There are mild multilevel degenerative changes in the thoracic spine . Clips from prior cholecystectomy are seen in the right upper quadrant . Remote right posterior rib fracture is seen .
    OUTPUT:
    
No acute cardiopulmonary process .