Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are clear . The cardiomediastinal silhouette is within normal limits . Mild atherosclerotic calcifications are noted at the aortic arch . No acute osseous abnormality identified .
    OUTPUT:
    
No acute cardiopulmonary process . Dedicated rib series would be more sensitive for detection of rib fractures , particularly of the anterior ribs .