Objective To investigate the anatomical characteristics of the non-recurrent laryngeal nerve(NRLN) and summarize the experience of avoiding injury to it during thyroid surgery. Methods The clinical data of 3975 cases underwent thyroid surgery for tumors were analyzed retrospectively. The CT images of those were reviewed as well Results The recurrent inferior laryngeal nerves were exposed during operation in all patients except for 9 cases, in whom the NRLN was identified intraoperatively. The incidence rate of NRLN was 0. 23％(9/3975) in this group. The preoperative CT scan showed a retroesophageal aberrant right subclavian artery in the 9 cases. Conclusion By identifying an aberrant right subclavian artery on the CT image of the neck has a certain value of predicting a diagnosis of right NRILN. When the recurrent inferior laryngeal nerve can not be found during thyroid surgery, the injury of NRLN and vocal cord paralysis may be prevented by carefully dissecting and totally exposing it.%目的 探讨喉不返神经解剖特点,总结甲状腺手术如何术前诊断喉不返神经以及术中预防其损伤的经验.方法 回顾性分析3975例甲状腺占位性病变手术中寻找和显露喉返神经的记录,并复习CT影像资料.结果 对3975例患者术中均常规显露喉返神经.其中有9例患者术中被确认存在喉不返神经,发生率为0.23%,均发生于右侧,且9例均可从术前CT片中找出食管后异位锁骨下动脉;9例患者均未发生喉不返神经损伤.结论 术前CT影像对预测喉不返神经有一定价值;术中常规未能显露喉返神经时,显露喉不返神经后再切除腺体可有效避免喉不返神经的损伤.
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