The metastasis incidences of prelaryngeal lymph node were 0. 39%, 0. 37%, 0. 02% and 2. 55% respectively of supraglottic, glottic, subglottic and transglottic carcinomas.

• 喉前淋巴结转移率为1．3%25．其中声门上癌、声门癌、声门下癌和跨声门癌的喉前淋巴结转移率分别为0．39%25、0．73%25、5．02%25和2．55%25。