Invasion by malignant cells can cause either regional lymphadenopathy, as in patients with head and neck tumors, or generalized lymphadenopathy, as in patients with disseminated carcinomatosis.
2
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.
3
如有原发肿瘤病史，淋巴结边缘强化伴中心坏死是诊断颈部淋巴结转移最可靠的征象。
Enhancing rim with central low attenuation is a reliable sign for diagnosing cervical lymph node metastases, in patients with known primary cancer.
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