Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are unremarkable . The pulmonary vasculature is normal and the lungs are clear . No pleural effusion , focal consolidation or pneumothorax is seen . There are mild degenerative changes noted within the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .