You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Most common primary bone tumour in adult bone is: and explain in detail?
(osteogenic sarcoma) (218-M) (185-Appley's 8th)* Osteogenic sarcoma is highly malignant primary bone tumour - (Common in Age 15-25 years)* Osteoid osteoma - is the commonest true benign tumour of the bone.