What is bone cancer? This is a unique bearing structure, frame, and human skeleton. However, even this seemingly solid system may be marginalized and become a refuge for malignant tumors. Malignant tumors can develop independently and can also be generated through the regeneration of benign tumors. In most cases, if we talk about bone cancer, we mean the so-called metastatic cancer, when the tumor develops in other organs (lung, breast, prostate) and spreads in the late stage, including bone tissue. Bone cancer is sometimes called cancer from bone marrow hematopoietic cells, but it does not come from the bone itself. This may be multiple myeloma or leukemia. But the real bone cancer originates from the bone and is usually called sarcoma (malignant tumor "grows" in bone, muscle, fiber or fat tissue and blood vessels).