Ann Surg:与标准全结肠系膜切除术相比,扩大全结肠系膜切除术治疗乙状结肠癌弊或大于利!

2021-09-02 Nebula MedSci原创

与标准全结肠系膜切除术相比,扩大全结肠系膜切除术并没有增加清除出的淋巴结数量,也没有改善乙状结肠癌患者的局部复发率或生存率

尽管有25%的结直肠癌会侵及乙状结肠,但结肠切除术(乙状结肠切除术 vs 左结肠切除术)、淋巴清扫术(D2 vs D3)和全结肠系膜切除术的最佳范围仍存在争议。

在乙状结肠癌和上直肠癌手术中,标准全结肠系膜切除术 (s-CME) 会清扫肠系膜下动脉 (IMA) 周围的淋巴组织,但不清扫肠系膜下静脉部分周围的淋巴脂肪组织。扩大全结肠系膜切除术 (e-CME) 是在 s-CME 的基础上,将肠系膜下静脉(IMV)周围的淋巴组织也清扫掉。但是,目前仍缺乏关于 e-CME 的安全性和疗效。

e-CME 和 s-CME 的示意图 (s-CME:绿色标记范围e-CME: s-CME+黄色标记范围)

本研究旨在评估对乙状结肠癌进行扩大全结肠系膜切除术 (e-CME) 是否能在不影响发病率或功能结果的情况下改善患者的临床预后。

这是一项单盲的随机研究,从 4 个医疗中心招募了乙状结肠患者,随机分至 e-CME 或 s-CME 组。主要终点是清扫出的淋巴结总数。次要终点包括 2 年无病生存期和总生存期、死亡率以及肠道和泌尿生殖功能。

两组的无病生存期和总生存期

共分析了 93 位患者:46 例 e-CME 和 47 例 s-CME。两组围手术期的结果相似e-CME 组和 s-CME 组清扫出的淋巴结总数无明显差异(中位值 21 枚 [IQR 14-29] vs 20 枚 [IQR 15-27];p=0.873)。此外,两组间的发病率(p=0.829)、无病生存期(p=0.926)及总生存期(p=0.564)也均无统计学意义的差异。扩大手术多清扫出 1 枚淋巴结(中位数,范围 0-6 枚),但病理结果无一转移阳性。

两组之间在所有时间节点的肠功能恢复情况相近。男性患者经 e-CME 治疗后的泌尿功能和性功能的恢复较差(p 值分别是 0.026 和 0.046)。

综上,囊括 IMV 区域的扩大淋巴结清扫范围并没有增加清除出的淋巴结数量,也没有改善乙状结肠癌患者的局部复发率或生存率

原始出处:

Planellas P,Marinello F,Elorza G et al. Extended Versus Standard Complete Mesocolon Excision in Sigmoid Colon Cancer: A Multicentre Randomised Controlled Trial.[J] .Ann Surg, 2021, https://doi.org/10.1097/SLA.0000000000005161

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    2021-09-04 zzc2216
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    2021-09-03 ms5000000518166734

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