结论(1)持续接触低热，皮下温度的快速增高及由此造成的变性、坏死是导致深度烧伤的原发因素。

Conclusion (1) the sharp increase in subcutaneous temperature leading to degeneration and necrosis might be the primary cause of deep burn.

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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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