Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours are normal . The pulmonary vascularity is normal and the lungs are clear . No pleural effusion or pneumothorax is present . Air is noted diffusely throughout non-dilated loops of large and small bowel . No free air is seen under the diaphragms .
    OUTPUT:
    
No free air under the diaphragms . No acute cardiopulmonary abnormality .