Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are normal . No pleural effusion or pneumothorax is present . No definite rib fractures are noted , however if this is a clinical concern , then dedicated rib series with markers at the site of pain are recommended for further evaluation .
    OUTPUT:
    
No acute intrathoracic process .