18K views · 10K reactions | This isn’t just a case of thickened bone — it’s a face transformed by disease. Leontiasis ossea, also called lion face syndrome, is a rare condition where the bones of the face and skull overgrow, often due to underlying disorders like Paget’s disease or fibrous dysplasia. In this video, we’ll explore how this dramatic condition alters the human skeleton and the challenges it posed for those who lived with it. | The Bone Museum | Facebook