Nerve bundle invasion indicates that the cancer cells have invaded the peripheral nerves, so it is very likely that the cancer cells will metastasize to other parts of the body along the nervous system at this time, and thus distant metastasis will occur. Therefore, nerve invasion is a high-risk recurrence factor for malignant tumors, and even if the tumor has been surgically removed at an early stage, distant metastasis is likely to occur after surgery. In this case, adjuvant chemotherapy is also needed after surgery, which can reduce the chance of recurrence and metastasis in the future and thus improve the cure rate of tumor. Regular review is also needed after surgery in order to detect tumor recurrence and treat it as early as possible.