Rectal cancer is primarily a malignant tumor, and there are individual differences in treatment, even differing biological behaviors. Some people discover it early, while others find it later, sometimes even with multiple metastases. If it is diagnosed in a later stage, naturally, the patient's survival period is shorter. Surgical treatment of rectal cancer is one aspect, and subsequent measures to possibly extend the patient's survival include radiotherapy, chemotherapy, targeted therapy, immunotherapy, etc.