Generally speaking, back pain alone is not a criterion for cancer, but needs to be combined with other symptoms for diagnosis. Cancer, also known as malignant tumor, produces different back pain depending on the location of the tumor, which should be analyzed according to the patient’s situation. 1. Lung cancer: usually the pain is more persistent and intense, due to the metastasis of advanced lung cancer to the scapula or spine, while invading the wall pleura, causing patients to have back The pain is usually more persistent and severe, because advanced lung cancer metastasizes to the scapula or spine and invades the pleura of the wall layer at the same time, so that the patient has soreness, pulling pain, or stabbing pain, accompanied by cough, hemoptysis, chest pain, pleural fluid and other symptoms; 2. When the pain is severe, there is a strong stinging sensation when swallowing food, accompanied by epigastric pain, anorexia, anemia, vomiting blood, wasting, etc.; 5. It usually occurs when the cancer is advanced or metastasized, accompanied by symptoms such as frequent urination, painful urination, hematuria, erectile dysfunction, etc.; 6. Bone metastasis: if the site of cancer bone metastasis is in the spine, sternum, etc., it will also cause back pain. In addition, trauma, cervical spondylosis and other diseases may also cause back pain, not necessarily because of cancer. If the symptoms of back pain persist for a long time and cannot be relieved even after repeated relaxation and accompanied by other symptoms, you should immediately consult a doctor and make a judgment under the guidance of a professional doctor together with other examination results.