Laryngeal electromyography findings of vocal fold immobility in patients after radiotherapy for nasopharyngeal carcinoma.

Head & Neck Pub Date : 2014-06-01 Epub Date: 2013-09-02 DOI:10.1002/hed.23388

Yi-Ling Hsieh, Ming-Hong Chang, Chen-Chi Wang

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引用次数: 8

Abstract

Background: The clinical features of vocal fold immobility (VFI) after radiotherapy for nasopharyngeal carcinoma (NPC) have seldom been reported.

Methods: We retrospectively reviewed laryngeal electromyography (LEMG) and tumor study findings to elucidate the common clinical features of patients who presented with VFI after radiotherapy for NPC. The LEMG signals obtained from the cricothyroid and thyroarytenoid muscles were used to confirm superior laryngeal nerve (SLN) and recurrent laryngeal nerve (RLN) injury.

Results: The medical records of 13 patients were reviewed and 11 of them had evidence of RLN injury. Six of the 11 patients also had SLN injury, indicating possible vagus nerve (VN) injury. Two patients had cricoarytenoid joint fixation without evidence of nerve injury. None of the nerve injuries were caused by skull base recurrence or tumor metastasis.

Conclusion: VFI is usually caused by nerve injury, but it is not a malignant sign of tumor recurrence or metastasis.

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鼻咽癌放疗后声带不动的喉肌电图表现。

背景:鼻咽癌放疗后声带不动(VFI)的临床特点鲜有报道。方法:我们回顾性回顾喉部肌电图(LEMG)和肿瘤研究结果，以阐明鼻咽癌放疗后出现VFI患者的共同临床特征。应用环甲肌和甲状腺杓状肌的LEMG信号确认喉上神经(SLN)和喉返神经(RLN)损伤。结果:回顾了13例患者的病历，其中11例有RLN损伤的证据。11例患者中6例同时有SLN损伤，提示迷走神经(VN)损伤。2例患者行环杓关节固定，无神经损伤迹象。所有神经损伤均无颅底复发或肿瘤转移所致。结论:VFI多为神经损伤所致，并非肿瘤复发或转移的恶性征象。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Head & Neck

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