Lateral cricoarytenoid muscle, posterior cricoarytenoid one, thyroarytenoid and interarytenoid ones were often invaded.

环杓侧肌、环杓后肌、甲杓间和杓间肌经常受侵；

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Lateral cricoarytenoid muscle, posterior cricoarytenoid one, thyroarytenoid and interarytenoid ones were often invaded.

环杓侧肌、环杓后肌、甲杓间和杓间肌经常受侵；

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