Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Safety pin projects over the upper abdomen to be confirmed clinically that this is external .
    OUTPUT:
    
No acute cardiopulmonary process . Safety pin projects over the upper abdomen to be confirmed clinically that this is external .