What is the postoperative treatment for papillary thyroid cancer? 1. Papillary thyroid cancer is a cancer with good differentiation and low malignancy. The current international popular treatment is a three-step therapy: first, surgical excision, the more complete the excision, the better, retaining part of the thyroid gland, which cannot avoid hypothyroidism, but leaves the hidden danger of recurrence and metastasis; second, followed by iodine-131 therapy, which removes the remaining thyroid gland, possible metastatic lymph nodes and hidden metastases by internal irradiation of iodine-131, while external irradiation therapy and chemotherapy have almost no effect. External irradiation therapy and chemotherapy have almost no effect, which has been agreed by most experts and scholars at home and abroad; third, adequate thyroxine replacement of thyroid function, suppression of TSH elevation, thyroglobulin (TG) monitoring. 3. Please consult multiple sources for the above suggestions for reference.