Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart size is normal . The mediastinal and hilar contours are unchanged and within normal limits . There is no focal consolidation , pleural effusion or pneumothorax . No pulmonary edema is seen . Mild degenerative changes of the thoracic spine are noted .
    OUTPUT:
    
No acute cardiopulmonary process .