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右半结肠癌完整结肠系膜切除术后局部复发风险:基于人群研究的事后敏感性分析。

Risk of Local Recurrence After Complete Mesocolic Excision for Right-Sided Colon Cancer: Post-Hoc Sensitivity Analysis of a Population-Based Study.

机构信息

Department of Surgery, Nordsjællands Hospital, Hillerød, Denmark.

Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark.

出版信息

Dis Colon Rectum. 2022 Sep 1;65(9):1103-1111. doi: 10.1097/DCR.0000000000002174. Epub 2021 Nov 24.

DOI:10.1097/DCR.0000000000002174
PMID:34856593
Abstract

BACKGROUND

A causal treatment effect of complete mesocolic excision for right-sided colon cancer on the risk of recurrence has been shown, but it is still unclear whether this is caused solely by a risk reduction of local recurrence.

OBJECTIVE

The goal of this study was to assess to what extent complete mesocolic excision contributes to the risk of local recurrence.

DESIGN

This study was a posthoc analyses of data from a population-based cohort. Inverse probability of treatment weighting and competing risk analyses were used to estimate the possible causal effects of complete mesocolic excision.

SETTING

Data were collected from the 4 public colorectal cancer centers in the Capital Region of Denmark.

PATIENTS

Patients undergoing elective colon resections for right-sided colon cancer without distant metastases during the period 2010-2013 were included. One center performed complete mesocolic excision and the remaining 3 centers performed conventional resections.

MAIN OUTCOME MEASURES

The primary outcome was the cumulative incidence of solely local recurrence 5.2 years after surgery. Secondary outcomes were solely distant recurrence and both local and distant recurrence diagnosed within 180 days.

RESULTS

A total of 807 patients were included with 186 undergoing complete mesocolic excision and 621 conventional resections. The 5.2-year cumulative incidence of a solely local recurrence was 3.7% (95% CI, 0.5-6.1) after complete mesocolic excision compared with 7.0% (5.0-8.9) in the control group, and the absolute risk reduction of complete mesocolic excision was 3.7% (2.5-7.1; p = 0.035). The absolute risk reduction on local and distant recurrence was 3.4% (1.3-5.6; p = 0.002) and on solely distant recurrence was 3.1% (0.0-6.2; p = 0.052).

LIMITATIONS

The recurrence risk after conventional resection might be underestimated by the use of inappropriate modalities to diagnose local recurrence for some patients and the shorter duration in this group.

CONCLUSION

This study shows a causal treatment effect of complete mesocolic excision on the risk of a solely local recurrence and of distant recurrence with or without local recurrence. See Video Abstract at http://links.lww.com/DCR/B832 .RIESGO DE RECURRENCIA LOCAL DESPUÉS DE LA ESCISIÓN MESOCÓLICA COMPLETA PARA EL CÁNCER DE COLON DEL LADO DERECHO: ANÁLISIS DE SENSIBILIDAD POST-HOC DE UN ESTUDIO POBLACIONALANTECEDENTES:Se ha demostrado un efecto del tratamiento causal de la escisión mesocólica completa para el cáncer de colon del lado derecho sobre el riesgo de recurrencia, pero aún no está claro si esto se debe únicamente a una reducción del riesgo de recurrencia local.OBJETIVO:Evaluar en qué medida la escisión mesocólica completa se atribuye al riesgo de recurrencia local.DISEÑO:Análisis posthoc de datos de una cohorte poblacional. Se utilizaron análisis de probabilidad inversa de ponderación del tratamiento y de riesgo competitivo para estimar los posibles efectos causales de la escisión mesocólica completa.AJUSTE:Datos de los cuatro centros públicos de cáncer colorrectal en la Región Capital de Dinamarca.PACIENTES:Pacientes sometidos a resecciones de colon electivas por cáncer de colon derecho sin metástasis a distancia durante el período 2010-2013. Un centro realizó escisión mesocólica completa, el resto resecciones convencionales.PRINCIPALES MEDIDAS DE RESULTADO:El resultado primario fue la incidencia acumulada de la recidiva local únicamente, 5,2 años después de la cirugía. Los resultados secundarios fueron únicamente la recidiva a distancia y ambas,la recidiva local y a distancia diagnosticada dentro de los 180 días.RESULTADOS:Se incluyeron un total de 807 pacientes, 186 sometidos a escisión mesocólica completa y 621 resecciones convencionales. La incidencia acumulada de 5,2 años de una recidiva únicamente local fue del 3,7% (IC del 95%: 0,5 a 6,1) después de la escisión mesocólica completa en comparación con el 7,0% (5,0 a 8,9) en el grupo de control, y la reducción del riesgo absoluto de la escisión mesocólica completa fue del 3,7% (2,5-7,1; p = 0,035). La reducción del riesgo absoluto de recidiva local y distante fue del 3,4% (1,3-5,6; p = 0,0019) y de recidiva únicamente a distancia 3,1% (0,0-6,2; p = 0,052).LIMITANTES:El riesgo de recurrencia después de la resección convencional podría subestimarse por el uso de modalidades inapropiadas para el diagnostico de la recurrencia local en algunos pacientes y la duración más corta en este grupo.CONCLUSIÓN:Este estudio muestra un efecto del tratamiento causal de la escisión mesocólica completa sobre el riesgo de una recidiva únicamente local y de recidiva a distancia con o sin recidiva local. Consulte Video Resumen en http://links.lww.com/DCR/B832 . (Traducción-Dr. Mauricio Santamaria ).

摘要

背景

完全结肠系膜切除术治疗右侧结肠癌的复发风险已被证明具有因果关系,但目前尚不清楚这是否仅仅是由于局部复发风险的降低。

目的

本研究的目的是评估完全结肠系膜切除术对局部复发风险的贡献程度。

设计

这是一项基于人群的队列的事后分析。使用逆概率治疗加权和竞争风险分析来估计完全结肠系膜切除术的可能因果效应。

地点

数据来自丹麦首都地区的 4 家公共结直肠癌症中心。

患者

纳入 2010-2013 年期间接受择期右结肠癌切除术且无远处转移的患者。其中一个中心进行了完全结肠系膜切除术,其余 3 个中心进行了常规切除术。

主要观察指标

主要结局是手术后 5.2 年的单纯局部复发累积发生率。次要结局是单纯远处复发和 180 天内诊断的局部和远处复发。

结果

共纳入 807 例患者,其中 186 例行完全结肠系膜切除术,621 例行常规切除术。完全结肠系膜切除术后 5.2 年的单纯局部复发累积发生率为 3.7%(95%CI,0.5-6.1),对照组为 7.0%(5.0-8.9),完全结肠系膜切除术的绝对风险降低率为 3.7%(2.5-7.1;p=0.035)。局部和远处复发的绝对风险降低率为 3.4%(1.3-5.6;p=0.002),单纯远处复发的绝对风险降低率为 3.1%(0.0-6.2;p=0.052)。

局限性

由于一些患者局部复发的诊断方法不当,以及该组患者的随访时间较短,常规切除术的复发风险可能被低估。

结论

本研究显示完全结肠系膜切除术对单纯局部复发风险以及伴有或不伴有局部复发的远处复发风险具有因果治疗效应。详见视频摘要,网址:http://links.lww.com/DCR/B832 。

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