CGH:存在肠道息肉的患者进行大锯齿状息肉切除后夹子闭合不会降低出血风险

2022-01-03 MedSci原创 MedSci原创

大的息肉样腺瘤主要是外科切除,或在肠镜下用圈套器电灼切除。无蒂小息肉也可直接电灼烧除。

无蒂锯齿状腺瘤是一种外表类似于增生性息肉但具有独特组织构造特征的结直肠腺瘤/息肉。内镜下表现为扁平无蒂, 柔软光滑, 表面苍白, 边界不清,通常表面覆有黏液。有20%至30%的大肠癌病人会出现锯齿状息肉(SPs)的先兆,最常见于息肉切除术后出血率较高的近端结肠。目前对于指导大锯齿状息肉 (LSP) 切除最佳实践的临床试验证据有限。因此,本项研究旨在探究大锯齿状息肉切除后,夹子闭合会不会降低出血风险。

 

本项试验是一项多中心试验,研究人员将接受内窥镜黏膜切除术 (EMR) 的大无蒂息肉(≥20 毫米)患者随机分为切除基底部夹闭组或不夹闭组。该分析按研究息肉的组织学亚型进行分层,归类为锯齿状 [无蒂锯齿状病变 (SSL) 或增生性息肉 (HP)] 或腺瘤性息肉,然后比较夹子组与对照组在结肠镜检查后 30 天内出现严重的术后出血的差异。

 

本项研究中总共包括了 179 名具有 199 个 LSP(191 个 SSL 和 8 个 HP)的参与者和 730 名具有 771 个腺瘤性息肉的参与者。总体而言,5 名 LSP 患者 (2.8%) 出现术后出血,而腺瘤患者中有 42 名 (5.8%)出现术后出血。在 LSP 患者中,夹子组与对照组患者的术后出血率没有差异( 2.3% VS 3.3%,差异 1.0%)。然而,在腺瘤性息肉患者中,夹闭与术后出血风险较低(3.9% vs 7.6%,差异 3.7%,p=0.03)和总体严重不良事件也较低(5.5% vs 10.6%,差异 5.1%, p=0.01)。

本项研究证实通过 EMR 移除 LSP 的术后出血风险较低,并且在该组中预防性夹闭切除基底没有明显的好处。该研究表明,EMR 后内镜下夹闭的益处可能对位于近端结肠的>2cm 的腺瘤性息肉具有更好的特异性。

原始出处:

Seth D. Crockett. Et al. Clip closure does not reduce risk of bleeding after resection of large serrated polyps: results from a randomized trial. Clinical Gastroenterology and Hepatology.2021.

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    2022-05-29 chendoc242
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    2022-01-04 ms2000000182667314

    学习

    0

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    2022-01-04 查查佳佳

    疫性血小板减少症 (ITP) 和温性自身免疫性

    0

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    2022-01-04 yangchou

    好文章,谢谢分享。

    0

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