Functional neck dissection should be taken for patients who have no palpable cervical lymph node hot have larger primary cancer focus.

对颈部未触及肿大的淋巴结，但原发病灶较大、肿瘤侵润较深者行功能性颈清扫；

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Functional neck dissection should be taken for patients who have no palpable cervical lymph node hot have larger primary cancer focus.

对颈部未触及肿大的淋巴结，但原发病灶较大、肿瘤侵润较深者行功能性颈清扫；

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