Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac , mediastinal and hilar contours are normal . Lungs are clear and the pulmonary vasculature is normal . No focal consolidation , pleural effusion or pneumothorax is present . No acute osseous abnormalities seen . Mild degenerative changes are noted within the lower thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .