Cancer in the body is not necessarily known to the lower back. In clinical practice, the vast majority of causes of low back discomfort are benign diseases such as herniated lumbar discs and kidney stones, so you can’t determine whether there is cancer based solely on the presence of low back pain. Some cancers can cause pain in the lower back, for example, cancers of the spine, kidneys, liver, abdomen, intestines, stomach, spinal cord and other parts of the body can cause pain in the lower back. Pain in other areas does not usually cause symptoms of low back pain. You cannot determine if you have cancer based on the presence of low back pain alone. In order to determine whether cancer is present, tumor marker tests, ultrasound tests, CT tests and other related tests are usually needed. Cancer is prone to pressure symptoms, which may include swelling and pain in the affected area, fever, and loss of weight in the late stage of the disease. In order to rule out cancer, patients with low back pain also need to do the relevant tests, do not blindly use drugs to avoid delaying the condition.