Department of Head and Neck Surgery, Cancer Hospital, Fudan University, Shanghai, China.
Head Neck. 2011 Feb;33(2):232-8. doi: 10.1002/hed.21434.
The nonrecurrent inferior laryngeal nerve is an anomaly associated with the absence of the brachiocephalic artery (BCA) and the presence of arteria lusoria.
The preoperative CT scans from 290 patients (9 nonrecurrent, 281 recurrent) were retrospectively reviewed. We identified the BCA or the arteria lusoria, and classified the relationship between the right subclavian artery (SCA) and the tracheoesophagus into 2 subtypes.
The arteria lusoria was identified in 6 nonrecurrent cases. The BCA was identified in 143 recurrent cases. The right SCA was detected on the ventral side of the membranous wall of the trachea in 273 recurrent cases, whereas it was detected on the dorsal side in 8 recurrent cases with enlarged thyroid, and it was detected on the dorsal side in 9 nonrecurrent cases without pressure sign.
It is possible to predict a nonrecurrent inferior laryngeal nerve by identifying the arteria lusoria or other features on the preoperative CT.
非返性喉返神经是一种与头臂动脉（BCA）缺失和异常左锁骨下动脉并存的异常。
回顾性分析了 290 例患者（9 例非返性，281 例返性）的术前 CT 扫描。我们识别了 BCA 或异常左锁骨下动脉，并将右锁骨下动脉（SCA）与气管食管的关系分为 2 个亚型。
在 6 例非返性病例中发现了异常左锁骨下动脉。在 143 例返性病例中发现了 BCA。在 273 例返性病例中，右 SCA 位于气管膜部的腹侧，而在 8 例甲状腺肿大的病例中位于背侧，在 9 例无压迫征的非返性病例中位于背侧。
通过术前 CT 识别异常左锁骨下动脉或其他特征，有可能预测非返性喉返神经。
