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Gastroenterology:结肠镜检查中腺瘤切除后大肠癌的发生率和死亡率

2019-09-29 MedSci MedSci原创

相比于传统观点,腺瘤大小≥20 mm或高级别异型增生为结肠癌高风险人群,这一发现为减少不必要的结肠镜检查以及风险人群更有效的监控提供了帮助

结肠镜复查频率应以直肠癌和腺瘤切除后死亡的风险为依据。近日研究人员开发了基于直肠癌发病率和腺瘤切除后死亡率的风险分类系统。

从2000年到2011年,研究人员在132个波兰国家结直肠癌筛查中心,对236089名患者(中位患者年龄56岁,37.8%为男性)进行了一项基于多中心的队列研究。参与者接受了肠镜检查,并进行了充分的肠道清洗和盲肠插管,随访7.1年,收集了有关结直肠癌发展和死亡的信息,采用多变量COX模型来确定结直肠癌风险与患者和腺瘤特征(直径、生长方式、不典型增生程度和腺瘤数目)之间的关系。

130个结直肠癌患者在筛查时切除了腺瘤(46.5/10万人年),309人没有腺瘤(22.2/10万人年)。相比于无腺瘤人群,20mm以上腺瘤以及高度发育不良人群的结肠癌风险增加(HR=9.25,3.58)。相比于一般人群,≥20mm的腺瘤(标准化发生率[SIR]=2.07)或高度发育不良(SIR=0.79)的患者,结直肠癌风险更高,而其他腺瘤特征个体风险较低(0.35)。在新模型下,腺瘤大小≥20 mm或高级别异型增生为高风险分类,而不是目前的≥3个腺瘤、绒毛腺瘤、高级别异型增生或≥10 mm腺瘤。根据新的分类,高风险人群由15242人(36.5%)减少到3980人(9.5%),而不会增加额外的结直肠癌的风险(每10万人的风险差异为5.6)。

相比于传统观点,腺瘤大小≥20 mm或高级别异型增生为结肠癌高风险人群,这一发现为减少不必要的结肠镜检查以及风险人群更有效的监控提供了帮助。

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    2020-04-14 许安
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    2019-10-01 zhouqu_8
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