There are too many lung cancers! Lung cancer is found too late! There are far too many regrettable cases of late detection! Lung cancer is the number one malignant tumor, and the number of deaths from lung cancer each year is greater than the number of deaths from breast, prostate and bowel cancers combined. Early detection and treatment of cancer directly affects the prognosis of patients. Although there are many advanced means to diagnose tumors, most of the lung cancers detected every year are in advanced stages. It is not possible to have regular checkups because although lung cancer is very common, the incidence rate is only 1 per thousand, so people do not pay attention to it. At present, it is impossible for everyone to have regular checkups such as chest X-ray, but for high-risk groups, they should pay more attention and should check their bodies once in 1~2 years without any problems. Symptoms appearing very late or not obvious is the main reason why the diagnosis is easily delayed. Who are prone to lung cancer? 1.People who are over 45 years old. 2.Men who smoke more than 20 cigarettes a day or the product of the number of cigarettes smoked per day and the number of years of smoking > 400. 3.Workers with long-term exposure to gas, asphalt, coking and inorganic arsenic, asbestos, chromium and nickel. 4, chronic respiratory diseases, such as chronic bronchitis, tuberculosis and other patients. 5, people who receive excessive radiation exposure and lack of protection.