Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 9 - mm right lower lobe metallic foreign body is new with subsegmental atelectasis . There is also new left lower lobe atelectasis . Mediastinal and cardiac contours are normal . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Right lower lobe 9 - mm metallic foreign body is new with subsegmental atelectasis . This has been discussed with Dr . ___ . The patient had a few months ago a broken tooth repaired and he is coughing since then . The metallic foreign body is mostly consistent with a tooth crown .