结论梨状窝癌对喉内的侵犯首先通过声门旁间隙；

Conclusions Intralaryngeal invasion of pyriform sinus carcinoma arose through paraglottic space first.

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结论甲状腺肿瘤手术为避免喉返神经损伤，应强调严格按照外科间隙解剖。

Conclusions in surgical operation of thyroid tumor the injury of the laryngeal recurrent nerve should be avoided.

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结论CT可较准确地显示肿瘤侵犯范围，包括喉软骨、声门旁间隙及会厌前间隙，以及颈部淋巴结转移。

Conclusion ct scanning can correctly display the extent of the lesion, including the involvement of laryngeal cartilage, para-glottal space, pre-epiglottal space and cervical lymph nodes.

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