Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are well - expanded and clear . No pleural effusion or pneumothorax . Heart is top - normal in size . Mediastinal contour and hila are unremarkable . Limited assessment of the upper abdomen is unremarkable . No free intraperitoneal air .
    OUTPUT:
    
Normal chest radiograph . Specifically no free intraperitoneal air .