Back pain is one of the manifestation symptoms of many kidney diseases, then, is back pain an early symptom of kidney cancer? We know that kidney cancer is a kind of malignant tumor in human body, so how should we prevent kidney cancer in our life? Patients with nephritis and kidney stones usually have back pain, but few people may know that back pain is also a big signal of kidney cancer. A painful lump in the waist is either a signal of kidney cancer, but since the kidney is located in a large space in the posterior abdominal cavity, it is not easy to find the tumor, so once the above symptoms appear, further examination should be done as soon as possible. Low back pain is indeed one of the manifestations of kidney cancer, but it should be distinguished from low back pain caused by lumbar muscle strain, cold and urinary stones. There are many causes of low back pain, among which the most common causes are lumbar muscle strain and osteophytes, while low back pain caused by urinary system, such as ureteral stones, is often unbearable colic, and kidney cancer is usually dull pain caused by internal organs, at this time, CT, or abdominal ultrasound must be done for preliminary diagnosis. However, it is worth reminding that tumor will only trigger pain when it grows to stimulate the envelope or muscle, therefore, regular medical checkups are more significant for early detection of kidney cancer. middle-aged and older people over 40 should have annual medical checkups, especially those who have family history of kidney cancer. CT and MRI can find out whether it is a tumor or not. It is important for men over 40 years old with smoking history to have kidney ultrasound for physical examination. Other manifestation symptoms of kidney cancer 1. Hematuria: it is mostly intermittent intermittent episodes of fleshly total hematuria with meta-pain. The intermittent period shortens with the development of the disease. If it is kidney cancer bleeding, it may be accompanied by renal colic, which is mostly caused by blood clots passing through ureter and is mostly cord blood. 2.Symptoms of systemic toxicity. 3.Lumps: About 10% of kidney cancer patients have palpable masses in the waist or upper abdomen, and those with tumors located in the lower pole of kidney and thin abdominal wall are easy to be palpated. 4.Wasting: weight loss and wasting are common systemic symptoms of kidney cancer patients, accompanied by general discomfort, loss of appetite, mental discomfort, fatigue and weakness, etc. 5.Spermatic varicose vein: It mostly occurs when the left kidney parenchymal tumor infiltrates and compresses the left spermatic vein, or it may be a cancer embolism in the spermatic vein, and the varicose vein does not disappear when lying down. 6.Other: Patients with kidney cancer may also have anemia, edema, hyperaemia and alkalosis, and some patients may have pathological fracture, paraplegia, chest pain, cough, hemoptysis, headache and increased intracranial pressure. Some patients visit the hospital with acute abdomen, mostly because of tumor rupture and bleeding to form retroperitoneal hematoma. What should be noted for the prevention of kidney cancer? At present, it is believed that kidney cancer has an important relationship with the decrease of immunity of patients. Those who often catch colds have the possibility of declining immunity, which must be paid great attention. In modern society, while enjoying the improvement of living standard, they also pay the corresponding price, such as high work pressure, long-term staying up late, or lack of exercise in a long-term closed office building; and excessive entertainment, such as playing mahjong in a closed and unventilated room, and will actively or passively smoke, may lead to the decline of their immunity, which may lead to the possibility of kidney cancer. In addition, long-term in places with more cars, harmful exhaust fumes (containing lead, cadmium, etc.) may also be an important reason for the decline of immunity, so the general public, especially the elderly, should try to avoid recreation in the above places.