Fig. 1

Flow chart of patient enrollment. cN0 no clinical evidence of lymph node metastasis, UTPC unilateral papillary thyroid carcinoma, CLNM central lymph node metastasis.

Flow chart of patient enrollment. cN0 no clinical evidence of lymph node metastasis, UTPC unilateral papillary thyroid carcinoma, CLNM central lymph node metastasis.