Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . Of note , a rounded structure button like density projects over the right lung apex , external in nature . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . There is no pneumomediastinum . There is no radiopaque foreign body .
    OUTPUT:
    
No intrathoracic radiopaque foreign body .