Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral radiographs of the chest were acquired . There is minimal bibasilar atelectasis . The lungs are otherwise clear . The heart size is normal . The mediastinal contours are normal . There are no pleural effusions . No pneumothorax is seen . Multilevel degenerative changes of the thoracolumbar spine are again noted .
    OUTPUT:
    
No acute cardiopulmonary process .