Below is an instruction from Human. Write a response.
    ### Instruction:
    What are the symptoms of Osteosarcoma and Malignant Fibrous Histiocytoma of Bone ?
    ### Response:
    Signs and symptoms of osteosarcoma and MFH include swelling over a bone or a bony part of the body and joint pain. These and other signs and symptoms may be caused by osteosarcoma or MFH or by other conditions. Check with a doctor if your child has any of the following:         - Swelling over a bone or bony part of the body.
    