Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The hilar and cardiomediastinal contours are normal . There is no pneumothorax or pleural effusion . The pulmonary vascularity is normal . There are stable atherosclerotic calcifications of the aortic arch as well as degenerative changes and kyphosis of the thoracic spine .
    OUTPUT:
    
No evidence of pneumonia or congestive heart failure .