Prospective Study on the Clinical Prognosis of Bilateral Central Lymph Node Dissection in the Patients With Unilateral Thyroid Papillary Carcinoma

This study recruit the patients with unilateral papillary thyroid cancer before operation,the patients agree to enter the test,and divided into experimental and control group.experimental group patients receive the surgery including unilateral thyroid lobectomy and bilateral central lymph node dissection.and control group receive the surgery including unilateral thyroid lobectomy and unilateral central lymph node dissection.last the investigators compare numbers of patient with tumor recurrence and metastasis rate of 5 years,numbers of metastatic lymph node,and numbers of participants with adverse events related to treatment between two groups in order to evaluate the significance of bilateral lymph node dissection.

according by thyroid carcinoma TNM(tumor,lymph node, metastasis) staging of NCCN (National Comprehensive Cancer Network)

Inclusion Criteria:

• 1.Unilateral thyroid papillary carcinoma 2.TNM staging: T1~2N0M0

Exclusion Criteria:

• 1.Bilateral thyroid papillary carcinoma 2.isthmus thyroid carcinoma 3.TNM staging: T3orT4 4.Clinic N1orM1