Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well expanded and clear . Mediastinal contour , hila , and cardiac silhouette are normal . There is no pneumothorax or pleural effusion . Elevation of the right hemidiaphragm is stable ___ . Metallic density object overlying the right humeral head is again noted .
    OUTPUT:
    
No pneumothorax or pneumonia .