1. What are the treatment methods of lung cancer? Traditional treatment methods include: surgical resection, chemotherapy, radiotherapy. With the development of minimally invasive treatment technology, cryotherapy and radioactive particle implantation are now used to treat lung cancer. 2. Which patients can choose cryotherapy? (1) patients with small volume but with high surgical risk (mainly heart or lung insufficiency) are not suitable for surgical resection; (2) patients refuse surgery; (3) lesions that remain, recur or metastasize in the lung after standard treatment; (4) tumor reduction treatment for advanced lung cancer. 3.How to do cryotherapy for lung cancer? Patients are placed in supine or prone position, CT scan is performed first to determine the puncture point, and after local anesthesia, the cryoprobe is inserted into the lesion under CT surveillance to start cryotherapy, and the treatment effect is monitored by CT inspection during the treatment process, and the cryoprobe is removed after cryotherapy. The patient can eat and drink normally after lying down for 2-4 hours. During the whole procedure, the patient remains awake. 4.Is cryotherapy for lung cancer safe? Cryotherapy for lung cancer has low physical requirements. Elderly patients with pulmonary heart disease, hypertension and diabetes mellitus can tolerate this treatment. The most common complications include: (1) Pneumothorax, which is caused by the gas entering the pleural cavity when the cryoprobe penetrates the pleura. A small amount of pneumothorax usually does not require treatment. (2) A small amount of postoperative coughing blood, which usually returns to normal after 3 days. (3) Mild postoperative fever with body temperature around 38 degrees, which is mainly due to the absorption of frozen necrotic tumor tissue. 5.Can cryotherapy achieve curative effect for lung cancer? For small tumors, cryotherapy can also achieve the effect of surgical cure. For larger tumors, treatment can be given in steps or combined with radioactive particle implantation, which can effectively control the tumor.