Bone metastasis is an advanced stage of cancer, a period when patients suffer a lot of pain, are tricky to treat and face the risk of death. And before the occurrence of bone metastasis cancer, there are often some signs. Cancer patients who have chronic leg pain for a short period of time and the pain still worsens after treatment, this type of patients must focus on considering the occurrence of bone metastasis. What are the precursors for the occurrence of bone metastasis cancer? 1.Continuously aggravated pain: the pain changes from mild to intermittent and gradually becomes persistent pain. 2.Lumps and lumps: lumps can be felt from the body surface or lumps can appear. 3.Nerve compression symptoms: Spinal nerve controls lower limb activities, when the tumor compresses the nerve, it will cause the lower limb cannot move normally. 4.Pathological fracture: Fracture may occur when there is slight external force. How to detect cancer bone metastasis? 1.Nuclear whole body bone imaging (ECT): ECT is the initial screening method for malignant tumor bone metastasis, but it is not used as a basis for diagnosis. 2.X-ray examination: X-ray examination is the main method to confirm the diagnosis of bone metastasis, but the sensitivity of early bone metastasis is low, only 44%-50%. 3.CT scan: It is also a diagnostic method for confirming bone metastasis, and its diagnostic sensitivity is higher than that of X-ray. 4.MR scan: The sensitivity of MR scan in diagnosing bone metastasis is 82%-100%, and it has special advantages in showing early metastases in bone marrow cavity. How to treat bone metastasis cancer? 1.Radiation therapy: It can control local lesions, relieve painful symptoms and improve life quality. 2.Surgical treatment: If necessary, surgical treatment can be used, especially for the limited bone metastases in the spine, which can restore spinal stability and prevent paralysis caused by pathological fracture. 3.Chemotherapy: Those with high PS score and primary tumor sensitive to chemotherapy can consider chemotherapy. 4.Chinese medicine treatment: advanced bone metastasis is mainly painful, and the comprehensive treatment of Chinese medicine, such as acupuncture and moxibustion, can indeed reduce symptoms and improve the quality of life. 5.Pain management: analgesic drugs should be used in a reasonable and standardized manner according to the WHO three-step pain relief principle to satisfactorily control cancer pain. How to prevent bone metastasis cancer? Bone metastasis is not a direct cause to threaten the life of tumor patients, but if the tumor metastasizes to the weight-bearing bones of the body such as cervical, thoracic and lumbar spine, it can cause serious consequences of paralysis; common cancers prone to bone metastasis include breast cancer, lung cancer, prostate cancer, kidney cancer bone and multiple myeloma, which can be prevented only by active treatment. 1.The incidence of bone metastasis of breast cancer is 65%-75%, and the treatment means are mainly systemic treatment, among which chemotherapy, endocrine therapy and molecular targeted therapy are used as the basic drug treatment for recurrent metastatic breast cancer. 2.The incidence of bone metastasis of lung cancer is 30-40%. The treatment means include systemic antitumor therapy, surgery, radiation therapy, analgesic therapy and bisphosphonate therapy. 3.The incidence of bone metastasis of prostate cancer is 65%-75%. The treatment means include bone modifying drug treatment, radiotherapy and analgesia, nuclear therapy, analgesic drug, surgery, etc., and accompanied by lifestyle adjustment. 4.The incidence of bone metastasis of kidney cancer is 20%-25%. Metastatic kidney cancer should be treated with comprehensive treatment based on internal medicine. 5.The incidence of multiple myeloma bone metastasis is 70%-95%. The treatment means include bisphosphonate drug therapy, local radiotherapy, surgery and analgesia. Warm tip: Patients with bone metastases should be treated with palliative care on the basis of anti-tumor therapy to improve the overall quality of life. Actively prevent fracture and paralysis. Because once paralysis occurs in patients with bone metastases, life expectancy is greatly shortened.