Surgical treatment of lung cancer Among the treatment methods of lung cancer, except for stage IIIb and IV, surgery or surgery should be the main treatment, and radiation therapy, chemotherapy and immunotherapy should be added according to the different stages and pathological tissue types. Surgical treatment is generally available for those who have the following conditions: 1. no distant metastasis, including parenchymal organs such as liver, brain, adrenal glands, bones, extra-thoracic lymph nodes, etc.; 2. cancerous tissues have not spread to adjacent organs or tissues in the chest, such as aorta, superior vena cava, esophagus and cancerous pleural fluid, etc.; 3. no severe cardiopulmonary depression or recent angina pectoris; 4. no severe liver or kidney disease or severe diabetes. 4, no serious liver and kidney disease and severe diabetes. Those with the following conditions should generally be operated with caution or require further examination and treatment: 1) those with poor cardiopulmonary function due to old age and body failure; 2) those with small cell lung cancer, except for stage I, should be treated with chemotherapy or radiotherapy before surgery; 3) those with several suspected metastases in the mediastinum in addition to the primary foci as seen on x-ray. At present, the indications for surgical treatment of lung cancer have been relaxed in academic circles. For patients with invasion of large blood vessels in the chest and distant isolated metastases, some scholars believe that they can be operated as long as their physical conditions permit, and relevant exploration and research have been conducted. If the lesion is found to be beyond the resectable scope but the primary cancer can still be resected, it is appropriate to remove the primary focus, which is called reduction surgery, but in principle, total pneumonectomy is not performed to facilitate other postoperative treatments. Surgery for recurrent or relapsed lung cancer 1.Surgery can remove the cancer, but there are still residual cancer, or regional lymph node metastasis, or cancer thrombus in blood vessels, etc. The chance of recurrence and metastasis is very high. Treatment of multiple primary lung cancer: Anyone diagnosed with multiple primary lung cancer is treated according to the principle of the second primary focus. 2. Treatment of recurrent lung cancer: The so-called recurrent lung cancer refers to the cancer foci occurring within the original surgical scar or the recurrence of intra-thoracic cancer foci related to the primary foci, which is called recurrent lung cancer. The treatment principle should be based on the patient’s cardiopulmonary function and whether it can be resected to determine the scope of surgery.