Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . Lungs are clear and the pulmonary vascularity is normal . There are no pleural effusions or pneumothoraces . No acute osseous abnormality is seen . Pulmonary vascularity is normal .
    OUTPUT:
    
No acute cardiopulmonary abnormality .