Rectal cancer basically does not recur or is very unlikely to recur 10 years after surgery, and can be clinically cured. If there is metastasis or recurrence of rectal cancer, it is usually easy to happen in the first 2 years, and metastasis and recurrence may also occur in the last 3 years. So for the first 2 years, you should go to the hospital for physical examination every 3 months, including anal finger diagnosis, abdominopelvic CT examination and enhanced CT examination if necessary, and for the second 3 years, you should go to the hospital for physical examination and re-examination every 6 months. It is also recommended to review colonoscopy every year, the purpose of which is to understand whether there is any sign of tumor recurrence or metastasis inside the intestine. If the patient has been more than 5 years, it means the possibility of recurrence and metastasis is very low, and the possibility of recurrence and metastasis more than 10 years is even lower.