The area around the first premolar tooth at the lower left jawbone is swollen. The patient is experiencing pain, and the swollen area has a bleeding tendency. A biopsy led us to a diagnosis of osteosarcoma. At the moment we are waiting to perform a CT scan. Do you think we should perform an operation (lower jawbone resection)? I believe osteosarcoma in the extremities are generally treated for pain management and not to gain a longer lifespan. What is the mindset for osteosarcoma in the lower jaw? Please give me some advice.