Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Pulmonary vasculature is normal . The lungs are clear . No focal consolidation , pleural effusion or pneumothorax is demonstrated . Mild S - shaped scoliosis of the thoracic spine is noted .
    OUTPUT:
    
No acute cardiopulmonary abnormality .