In clinical practice, there is no such thing as a latency period for malignant bone tumors, because these tumors progress very quickly. So, if you experience symptoms such as swelling and pain in the affected limb, if you can feel a mass, and if the pain severely impacts your daily life, you should promptly go to a hospital to get an imaging test done to determine whether a bone tumor is present. Only through imaging and accurate diagnosis can early diagnosis and treatment be achieved, which is the best treatment approach for osteosarcoma. Therefore, in clinical practice, there is no concept of a latency period for malignant bone tumors.