Some lung nodules will cause elevated tumor markers. 1. Malignant lung nodules: including malignant nodules caused by lung cancer, lung nodules formed by metastasis of breast cancer, liver cancer, colon cancer, etc., all of which can cause the elevation of corresponding tumor markers, and need to be treated timely and effectively through surgical resection as soon as possible. 2. Benign lung nodules: common ones include tuberculosis ball, bacterial lung abscess, fibroma, etc., which may lead to mild elevation of tumor markers, but can be restored to normal after active treatment. It is recommended that the patient should consult the doctor in time, improve the relevant examination to clarify the specific cause of the disease, and actively treat the disease to avoid delay.