Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are unchanged . Multiple calcified nodules throughout the lungs are unchanged . Otherwise The lungs are clear . The lungs are mildly hyperexpanded . There is no pneumothorax or pleural effusion . There are mild degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormalities