Patients who have suffered from pneumonia are not necessarily prone to lung cancer. The occurrence of lung cancer is related to many factors, not a single trigger or cause.
Theoretically speaking, pneumonia is not directly related to lung cancer, which is caused by pathogenic microorganisms such as bacteria, virus, mycoplasma, chlamydia, etc., while lung cancer is generally related to long-term smoking, family heredity, and long-term exposure to physicochemical factors (e.g., formaldehyde, benzene, and air environment pollution, etc.).
Patients with history of chronic lung diseases, such as tuberculosis and obstructive pneumonia, can cause lung cancer, but patients with lung cancer can be combined with pneumonia, which belongs to infectious diseases and needs to be treated by anti-infective drugs; while lung cancer belongs to malignant tumors, which needs to be treated by radiotherapy, chemotherapy, surgery, and targeted drugs.
Patients who have pneumonia and cannot be treated with anti-infectious drugs should be alerted to the possibility of lung cancer and should go to the hospital for examination.