What causes lung cancer to develop to the late stage? Five major causes of lung cancer in the late stage

In recent years, the mortality rate of lung cancer has increased significantly. The reason is that many people do not pay enough attention to the disease in the early stage of lung cancer, delaying the symptoms, and only find out that it has become advanced lung cancer in the later stage. So, what are the causes of advanced lung cancer? Today, experts will introduce the five major causes of advanced lung cancer to us.

1. Air pollution

(2) Internal factors of the human body such as family heredity, reduced immune function, metabolic activity and endocrine dysfunction.

3. Smoking

Long-term smoking can cause proliferation of bronchial mucosal epithelial cells, induce squamous cell carcinoma or undifferentiated small cell carcinoma. Although non-smokers can also develop lung cancer, adenocarcinoma is more common. Cigarettes release carcinogens when they burn.

4. Chronic lung diseases

For example, tuberculosis, silicosis, pneumoconiosis, etc. can coexist with lung cancer. The incidence of cancer in these cases is higher than that of normal people. In addition, chronic inflammation of the lungs and bronchi and pulmonary fibrosis and scar lesions may cause squamous metaplasia or hyperplasia during the healing process. On this basis, some cases can develop into cancer.

5. Occupational factors

Long-term exposure to radioactive substances such as uranium and radium and their derivatives, carcinogenic hydrocarbons, arsenic, chromium, nickel, copper, tin, iron, coal tar, pitch, petroleum, asbestos, mustard gas and other substances can induce lung cancer, mainly squamous cell carcinoma and undifferentiated small cell carcinoma.

After reading the above article, everyone knows the five major causes of advanced lung cancer. Experts suggest that everyone should pay attention to physical health, quit smoking and drinking, which is a kind of health protection for yourself and others. At the same time, pay more attention to your own body, and don't let the disease continue to develop because of your own neglect, and regret it in the end.