Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The aorta is mildly tortuous and demonstrates atherosclerotic calcifications . Mediastinal and hilar contours are otherwise unremarkable . Lungs are clear . No pleural effusion or pneumothorax is present . The pulmonary vasculature is normal . There are mild degenerative changes noted in the imaged thoracolumbar spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .