Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size , mediastinal and hilar contours are within normal limits and without change . Lungs are well expanded and clear . There are no pleural effusions or pneumothoraces . Degenerative changes are present in the spine .
    OUTPUT:
    
Stable radiographic appearance of the chest , with no acute cardiopulmonary abnormality .