European Radiology:淋巴结坏死的MRI定量评估在鼻咽癌中的预后价值

2022-09-09 shaosai MedSci原创

射科医生使用MRI可以很好地评估CNN,并进行恶性和良性结节的区分。然而,CNN是否能成为独立的预后因素尚有争议。

鼻咽癌(NPC)是头颈部最常见的癌症之一,在东南亚地区十分常见。目前NPC分期的国际标准,即美国癌症联合委员会(AJCC)分期系统(第八版),主要考虑如大小、水平和横向阳性淋巴结(LN)的基本特征,而忽略了淋巴结外肿瘤扩散(ENS)和颈部结节坏死(CNN)其他临床上有用的特征。因此,确定更多的鼻咽癌预后因素,并建立一个优化的N分期标准有助于改善生存预测和个体化治疗。

研究建议,在AJCC N分期系统中加入淋巴结因素(如结节分组、ENS、阳性LN的数量)提高其预测生存结果的准确性。然而,上述的那淋巴结因素比较主观,会导致解释上的更大差异。放射科医生使用MRI可以很好地评估CNN,并进行恶性和良性结节的区分然而CNN是否能成为独立的预后因素尚有争议。

近日,发表在European Radiology杂志的一项研究确定并扩大了MRI定量CNN的预后价值,以协助临床改善N分期风险分层,并随后确定了可从个体诱导化疗中获益的高风险NPC亚组。

本研究使用单变量和多变量的Cox回归模型评估了基于MRI图像的淋巴结变量与生存率之间的关系。提出了N分类系统的修订,并使用Harrell的一致性指数(C-index)与第8版AJCC分期系统进行比较。比较了诱导化疗加同期化放疗(CCRT)和单纯CCRT对多发性CNN患者的生存结果。 

在入组的1319名患者中,CNN不是主要生存结果的独立预后因素,但多个CNN(三个或更多坏死结节)是无远处转移生存(DMFS)(调整后的危险比[HR],2.05;p = 0.020)和无进展生存(PFS)(HR,1.78;p = 0.004)的独立预后因素,超过了其他淋巴结变量。在将有多个CNN的患者升级为修订的N3疾病时,建议的N分期扩大了N2和N3疾病之间的DMFS和PFS的差异。与单独接受CCRT的患者相比,接受CCRT加诱导化疗的多发性CNN患者的总生存率有所提高(76.1% vs. 55.7%;调整后的p = 0.030)。 


 显示了不同程度的颈部淋巴结坏死鼻咽癌患者的磁共振图像。 a 52岁男性的T2加权图像,双侧II级区域有一个坏死的淋巴结(箭头)。 b 37岁女性的T2加权图像,左侧II级区域有一个坏死的淋巴结(箭头)。c, d 一名39岁男性的T2加权和(e)增强T1加权图像,右侧咽后区(箭头)和双侧II级区(箭头)有四个坏死的淋巴结。 f 胸部X线图像显示初始治疗后14个月的多个双肺转移灶

本研究发现,多个CNN被确定为鼻咽癌患者的独立负面预后因素。与第8版AJCC分期系统相比,通过将有多个CNN的患者提升到N3期,修订后的N分类系统为DMFS和PFS提供了更满意的预后表现,处于AJCC II-IV期的多发性CNN患者能够从诱导化疗中获益。

原文出处:

Jiao Li,Qin Zhao,Yun Zhang,et al.Prognostic value of quantitative cervical nodal necrosis burden on MRI in nasopharyngeal carcinoma and its role as a stratification marker for induction chemotherapy.DOI:10.1007/s00330-022-08785-5

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    2023-02-27 feather89
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    2022-09-10 newyear929

    感觉有些复杂,临床判断是恶性淋巴结还是良性淋巴结更重要,我们也遇到过鼻咽癌淋巴结肿大,MRI报的是转移淋巴结,可切出来病历报的是良性淋巴结。因此我觉得正确判断MRI上淋巴结的良恶性更重要。

    0

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    2022-09-09 sodoo
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    2022-09-09 millore
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