Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are low in volume but clear . The cardiomediastinal silhouette and hilar contours are normal . No pleural effusion or pneumothorax is present . No definite rib fractures are noted . However , if rib fractures continue to be a clinical concern , then dedicated rib series with markers at the site of pain is recommended .
    OUTPUT:
    
No acute intrathoracic process . No definite rib fractures are noted . If these are of clinical concern , then a dedicated rib series with markers at the site of pain is recommended .