Abstract: ［Abstract］Objective〖HTSS〗To observe the difference in recurrence/metastasis rate of papillary thyroid microcarcinoma patients under different thyroid-stimulating hormone（TSH） inhibition treatment within 5 years.
〖HTH〗〖WTHZ〗Methods〖HTSS〗One hundred and twenty patients with papillary thyroid microcarcinoma selected from our department were performed with surgical treatment. When the patient was confirmed to have papillary thyroid carcinoma by frozen pathology during surgery, we used total thyroidectomy and central lymph node dissection or thyroid occipital and isthmic resection and central lymph node dissection. All patients were confirmed as micropapillary carcinoma by pathological methods after the surgery. Different levels of TSH inhibition treatment were administered to the moderate-risk group and the low-risk group. Patients′ thyroids were regularly reviewed by ultrasound for about 5 years.
〖HTH〗〖WTHZ〗Results〖HTSS〗In the moderate-risk group, patients who received TSH inhibition treatment did not differ from those who received drug substitution therapy within 5 years follow-up(P＞0.05). In the low-risk group, there also was no significant difference between the TSH inhibition treatment and drug substitution therapy(P＞0.05).
〖HTH〗〖WTHZ〗Conclusion〖HTSS〗For the moderate-risk and low-risk groups of papillary thyroid microcarcinoma, drug substitution did not increase the recurrence rate after the operation within 5 years.

Key words: thyroid neoplasm, thyrotropin, recurrence