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100例标本都有喉上神经外支,它紧靠甲状腺上血管后方下行,同包于一个血管神经鞘内,处理甲状腺侧叶上极的血管时,要先将血管与神经分离,然后在侧叶上端选择性地结扎甲状腺上血管,这样才能避免损伤喉上神经外支。本文还统计了喉返神经与甲状腺下动脉相关系的各种型式,详细讨论了喉返神经的局部关系,提出避免损伤喉返神经的解剖学依据。由于右锁骨下动脉食管后位而引起的右喉返神经经过异常者占1％。
100 cases have laryngeal nerve extracranial branch, which immediately after the descending thyroid blood vessels, with the same package in a vascular nerve sheath, handling the thyroid gland side of the pole of the vessel, the first vessel and nerve separation, and then in the side The top of the leaf selectively ligation of the thyroid gland vessels, so as to avoid damage to the laryngeal nerve branches. In this paper, various types of recurrent laryngeal nerve and inferior thyroid artery are also counted. The local relationship between recurrent laryngeal nerve and the anatomical basis of avoiding recurrent laryngeal nerve are proposed. Due to the right subclavian posterior esophagus caused by the right recurrent laryngeal nerve abnormalities accounted for 1%.