Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is normal . Minimal atelectasis is noted in the left lung base . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormality is seen . There are multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .