Lung cancer is a very common malignant tumor in the world, including two types, one is small cell lung cancer and the other is non-small cell lung cancer. Did you know that most lung cancers are non-small cell lung cancer? Yes, so what is non-small cell lung cancer? Let’s take a look.

　　Non-small cell lung cancer

　　Lung cancer has become the most common malignant tumor in China and the world. Non-small cell lung cancer includes squamous cell carcinoma (squamous cell carcinoma), adenocarcinoma, and large cell carcinoma. Compared with small cell carcinoma, the growth and division of cancer cells are slower, and the spread is later. About 80% of lung cancers are non-small cell lung cancers, but about 75% of patients find that they are in the middle and late stages at the time of diagnosis, and the 5-year survival rate is very low.

　　Non-small cell lung cancer etiology 1, environmental factors

　　Many patients with non-small cell lung cancer are largely caused by their environment, some Patients will be exposed to substances that cause lung cancer for a long time because of work or other reasons, such as asbestos, formalin, mustard gas, vinyl chloride, chromium compounds, silicon, beryllium, cadmium and other substances, which lead to lung cancer. In fact, we live in contact with everyone Lung cancer-causing substances, because of atmospheric pollution and industrial exhaust gases can cause lung cancer, but only because of the working environment of some patients, the probability of lung cancer is greater than that of ordinary people.

　　Causes of non-small cell lung cancer 2. Genetic factors

　　Some family genetic factors will cause the inherited to be more sensitive to the carcinogenic environment, which is their immunity Decreased ability and endocrine disorders all contribute to the occurrence of lung cancer, which means that it increases the chance of cancer.

　　Causes of non-small cell lung cancer 3. Smoking

　　Everyone knows that smoking is harmful to health, not only those who directly smoke, but also those who are forced to smoke second-hand smoke What''s more, tobacco contains a variety of chemicals, which contains substances that cause lung cancer, and it is generally believed that tobacco is the biggest killer of lung cancer.

　　Cause of non-small cell lung cancer 4. Chronic lung infection

　　If you have previously suffered from tuberculosis and bronchiectasis resulting in lung infection, severe cases may be Cancerous lungs, but this is not uncommon.

　　Causes of non-small cell lung cancer 5. Radiation factors

　　 Radiation factors, ionizing radiation can also cause non-small cell lung cancer.