5Ito Y,Miyauchi A. A therapeutic strategy for incidentally detected papillary microcarcinoma of the thyroid[J]. Na- ture ClinPract Endocrinol Metab,2007,3 :240-248.
6Ito Y, Ukuno T, Nakano K, et al. An observation trial without surgical treatment inpatients with papillary mi crocarcinoma of the thyroid [J]. Thyroid, 2003, 13 : 381- 387.
7Kucuk NO,Tari P,Tokmak E. Treatment for microcarci- noma of the thyroid clinical experience[J]. Clin Nuel Med, 2007,32(4) : 279-281.
8Hay ID, Hutchinson ME,Gonzalez Losada T,et al. Papil lary thyroid microcarci noma: a study of 900 cases ob served in a 60 year period[J]. Surgery, 2008,144:980- 987.
9Yoon KS, Young Ik S, Sang DH. Subclinical lymph node metastasis inpapillary thyroid microcarcinoma: Astudy of 551 resections[J]. Surgery, 2010,148 : 526-531.
10Lim YC, Choi EC, Yoon YH, et al. Central lymphnode metastases in unilateral papillary thyroid microcareinoma [J]. Br J Surg,2009,96:253-257.