Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are stable with cardiac size normal and tortuous aorta . . The lungs are clear . There is no pneumothorax or pleural effusion . There are mild degenerative changes in the thoracic spine
    OUTPUT:
    
No acute cardiopulmonary abnormalities or evidence of large lung nodules