Chemotherapy followed by surgery does not necessarily mean that the tumor is at an advanced stage, and the stage of the tumor is not determined by the treatment method. The treatment method of chemotherapy followed by surgery is called neoadjuvant chemotherapy, which is usually because the tumor is considered resectable after evaluation, but the difficulty of resection is high, such as the tumor is large in size, adjacent to important organs and blood vessels, and the anatomical location is complicated, etc. At this time, the tumor size, infiltration depth and metastatic foci can be reduced through preoperative chemotherapy, so as to reduce the difficulty of resection of the tumor, and to create the conditions for surgery. Tumor staging is usually determined by the size of the tumor, metastasis and depth of infiltration, not by the treatment method. Once a tumor is found, one should go to the hospital in time for consultation and treatment under the guidance of professional doctors.