Lung cancer is currently the most common tumor, and it is also a tumor with many treatments, but the recurrence rate is high. Even in the early stage of lung cancer after complete resection, there are about 20-40 patients with local or distant recurrence. The risk of recurrence is higher in the first 4 years after surgery, and the risk of recurrence per person is 6-7％ each year, and the risk of recurrence will be reduced to about 2％ Therefore, patients with lung cancer should also follow up for not less than 5 years of follow-up observation to effectively reduce the recurrence rate of the tumor. They must be prepared to fight for a long time, and they cannot be stopped. Otherwise, once the disease comes back, the treatment is very difficult. .

　　Best in the first 2 years In March, low-dose non-intensified CT examination and medical history and physical examination of the chest and upper abdomen were performed. At the same time, blood lung tumor markers were detected, and smoking cessation was noted. Then, low-dose non-enhanced CT and medical history and physical examination were performed every six months for 3 to 5 years. an examination. The data shows that low-dose CT screening can better reduce the mortality of lung cancer for ordinary chest radiographs, and may help to detect recurrence or metastasis. Usually, CT, MRI, bone scan, or whole-body PET/CT are not required. Only when the patient has symptoms in the corresponding part, even if the lung cancer is advanced, it is not recommended to use PET/CT as a routine review.

　　 Generally speaking, in the first year after surgery, it will be reviewed every three months; in the second year, it will be reviewed every six months; thereafter, it will be reviewed once a year, and will last for life. In the first year after surgery, chest CT is not checked every time a review is performed, mainly because the items related to the surgery are reviewed. But one thing to emphasize: at least once a year after the chest CT review, it is helpful to find the metastasis of small lung lesions. Once a problem is detected, it must be treated in time. Especially for patients with stage III non-small cell lung cancer after surgery, regular review is necessary.