GUT:不容小觑!这类患者应定期进行胃镜检查以期早期发现胃癌!

2021-06-04 MedSci原创 MedSci原创

胃癌(GC)是世界上第五大最常见的癌症,也是癌症相关死亡的第三大原因。

胃癌(GC)是世界上第五大最常见的癌症,也是癌症相关死亡的第三大原因。高死亡率主要是由于疾病的晚期表现。超过70%的国家报告说GC的死亡率与发病率之比很高(>0.8)。

然而,全世界范围内,目前只有日本和韩国有政府赞助的内镜筛查项目。有研究报告指出,内径筛查是的全国GC的死亡率与发病率降低(分别为0.43和0.35),突出了全民内镜筛查对早期发现GC的好处。

在GC中等或低发病率的国家,全民内镜筛查的方法并不具有成本效益。对于这样的地区,对高危人群进行有针对性的内镜筛查可能是更好的方法。

通常,肠道癌症亚型一系列可识别的癌前阶段发展--炎症、萎缩、肠道变形(IM)、发育不良和随后的癌变。 -然而,临床上对胃癌前病变的监测采用率仍然很低,这主要是由于缺乏大型前瞻性研究的支持性临床证据,取样和报告方式不统一,以及实施人口级筛查的成本。

多项研究表明,与胃癌相关的胃炎评估(OLGA)能可靠地识别出GC高风险的患者亚群。为了调查归因于胃肠化生(IM)的胃癌(GC)发生率,并验证OLGIM在GC中低发地区进行有针对性的内镜监测,来自新加坡国立大学的专家开展了相关研究,结果发表在GUT杂志上。

研究人员在在新加坡进行了一项前瞻性、纵向和多中心的研究。研究参与者包括2004.01-2010.12期间接受标准化胃粘膜取样的筛查胃镜检查的2980名患者,并在第3年和第5年进行定期监测内镜检查。参与者还与国家疾病登记处的早期胃肿瘤(EGN)的漏诊情况进行了匹配。

(A) 年龄调整后的EGN发病率,按OLGIM阶段分层。(B) 框图描述了OLGIM II(橙色)和OLGIM III-IV(红色)患者发生EGN的时间(年)

共有21名参与者被诊断为EGN。总的来说,IM是EGN的一个重要风险因素,可增加4.36倍EGN风险(HR=5.36;95%CI:1.51-19.0;P<0.01)。有和没有IM的患者的年龄调整后的EGN发病率为133.9/10万人`年和12.5/10万人`年。

其中,OLGIMIII-IV期的参与者风险最大,几乎增加20倍(HR=20.7;95%CI:5.04-85.6;P<0.01)。超过一半的EGN(n=4/7)归因于基线OLGIM III-IV期的患者在2年内发病(范围:12.7-44.8个月)。

同时,研究人员发现,如果幽门螺杆菌阴性,血清三叶因子3(TFF3)可以区分OLGIM III-IV的患者。患有OLGIM II的参与者也有明显的EGN风险(HR=7.34;95%CI:1.60-33.7;P=0.02)。此外,显著的吸烟史会进一步增加OLGIM II-IV期患者的EGN风险。

综上,该研究建议采用风险分层的方法,同时对高风险患者(OLGIM III-IV)在2年内进行内镜监测,中度风险患者(OLGIM II)在5年内进行内镜监测,以更好预测胃癌发生。

 

参考文献:

Severity of gastric intestinal metaplasia predicts the risk of gastric cancer: a prospective multicentre cohort study (GCEP). http://dx.doi.org/10.1136/gutjnl-2021-324057

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    2021-06-10 SR~young海东

    早发现早治疗

    0

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    2021-06-08 1deacbaem62(暂无匿称)

    学习了

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    2021-06-07 SR~young海东

    防大于治,刻不容缓

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