Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are fully expanded and clear . No pleural abnormalities . Heart size is normal . Cardiomediastinal and hilar silhouettes are normal . A limited view of the upper abdomen reveals multiple loops of bowel with air - fluid levels concerning for obstruction .
    OUTPUT:
    
Normal chest . A limited view the upper abdomen reveals multiple loops of bowel with air - fluid levels concerning for obstruction .