The chance of recurrence of thyroid cancer is usually based on the assessed risk of recurrence, which can be 20-30% for some patients with high risk of recurrence. The risk of recurrence is usually evaluated based on the malignancy of the thyroid cancer, whether local metastasis occurs, the age of the patient, and whether the patient has been exposed to radiation. Therefore, it is recommended that patients should undergo regular review at a specialized hospital after surgery and have timely treatment if recurrence is detected.