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 . Right rib fractures are old . No rib fractures are noted on the left at the site of the marker .
    OUTPUT:
    
No acute intrathoracic process . Unchanged old right rib fractures . No acute rib fractures .