Methods The clinical data of 810 cases of thyroid operation in which the RLN was exposed in 252 cases(group A) and was unexposed in 558 cases(group B) were analyzed.

• 方法分析810例甲状腺手术中252例甲状腺手术中显露RLN(甲组)和558例术中未显露RLN(乙组)患者的临床资料。