Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Comparative Study
. 2020 Apr;63(4):488-496.
doi: 10.1097/DCR.0000000000001569.

Significance of Radial Margin in Patients Undergoing Complete Mesocolic Excision for Colon Cancer

Jong Min Lee  1 , Taek Chung  2 , Kyung Min Kim  2 , Ng Siu Man Simon  3 , Yoon Dae Han  1 , Min Soo Cho  1 , Hyuk Hur  1 , Kang Young Lee  1 , Nam Kyu Kim  1 , Sat Byol Lee  1   4 , Ga Ram Kim  5 , Byung Soh Min  1   4
Affiliations
Comparative Study

Significance of Radial Margin in Patients Undergoing Complete Mesocolic Excision for Colon Cancer

Jong Min Lee et al. Dis Colon Rectum. 2020 Apr.

Abstract

Background: Comparable to circumferential resection margin in rectal cancer, radial margin is a potential prognostic factor in colon cancer that has just begun to be studied. No previous studies have investigated the influence of radial margin in the context of complete mesocolic excision.

Objective: This study aimed to examine the impact of radial margin on oncologic outcomes after complete mesocolic excision for colon cancer.

Design: We retrospectively reviewed patients with stage I to III colon cancer who underwent curative resection from October 2010 to March 2013.

Settings: This study was conducted using the prospective colorectal cancer registry of Severance hospital.

Patients: A total of 834 consecutive patients who underwent complete mesocolic excision for colon adenocarcinoma were included.

Interventions: We assigned patients into 3 groups according to radial margin distance: group A, radial margin ≥2.0 mm; group B, 1.0 ≤ radial margin < 2.0 mm; group C, radial margin <1 mm.

Main outcomes and measures: Overall survival and disease-free survival were estimated.

Results: On adjusted Cox regression analysis, only group C was predictive of reduced overall survival (HR, 1.90; 95% CI, 1.11-3.25; p = 0.018) and disease-free survival (HR, 1.93; 95% CI, 1.28-2.89; p = 0.001). We thereby defined radial margin threatening as radial margin <1 mm. Postoperative 5-fluorouracil (HR, 0.86; 95% CI, 0.35-2.10; p = 0.743) and FOLFOX (HR, 1.23; 95% CI, 0.57-2.64; p = 0.581) chemotherapy did not affect disease-free survival in patients with radial margin threatening.

Limitations: This study has the limitations inherent in all retrospective, single-institution studies.

Conclusions: Even with complete mesocolic excision, radial margin <1 mm was an independent predictor of survival and recurrence. This finding suggests that special efforts for obtaining a clear radial margin may be necessary in locally advanced colon cancer. See Video Abstract at http://links.lww.com/DCR/B125. IMPORTANCIA DEL MARGEN RADIAL EN PACIENTES SOMETIDOS A ESCISIÓN MESOCÓLICA COMPLETA PARA CÁNCER DEL COLON: Comparable al margen de resección circunferencial en cáncer rectal, el margen radial en cáncer de colon, es un factor pronóstico potencial, que recientemente comienza a estudiarse. Ningún estudio previo ha investigado la influencia del margen radial, en el contexto de la escisión mesocólica completa.Examinar en cáncer de colon, el impacto del margen radial en los resultados oncológicos, después de la escisión mesocólica completa.Revisión retrospectiva de pacientes con cáncer de colon en estadio I-III, sometidos a resección curativa de octubre 2010 a marzo 2013.Este estudio se realizó utilizando un registro prospectivo de cáncer colorrectal del hospital Severance.Se incluyeron un total de 834 pacientes consecutivos con adenocarcinoma de colon, sometidos a escisión mesocólica completa. Dividimos a los pacientes en 3 grupos según la distancia del margen radial: grupo A, margen radial ≥ 2.0 mm; grupo B, 1.0 ≤ margen radial <2.0 mm; grupo C, margen radial <1 mm.Se estimó la supervivencia general y la supervivencia libre de enfermedad.En el análisis de regresión de Cox ajustado, solo el grupo C fue predictivo de supervivencia global reducida (HR, 1.90; IC 95%, 1.11-3.25; p = 0.018) y supervivencia libre de enfermedad (HR, 1.93; IC 95%, 1.28-2.89; p = 0.001). Definimos como margen radial amenazante, un margen radial <1 mm. La quimioterapia posoperatoria con 5-FU (HR, 0,86; IC 95%, 0,35-2,10; p = 0.743) y FOLFOX (HR, 1,23; IC 95%, 0,57-2,64; p = 0,581), no afectó la supervivencia libre de enfermedad en pacientes con riesgo de margen radial.Este estudio tiene limitaciones inherentes a todos los estudios retrospectivos de una sola institución.Aun con la escisión mesocólica completa, el margen radial <1 mm fue un predictor independiente de supervivencia y recurrencia. Este hallazgo sugiere que pueden ser necesarios esfuerzos especiales para obtener un claro margen radial, en cáncer de colon localmente avanzado. Consulte Video Resumen en http://links.lww.com/DCR/B125.

PubMed Disclaimer

References

    1. Heald RJ. The ‘Holy Plane’ of rectal surgery. J R Soc Med. 1988;81:503–508.
    1. Hohenberger W, Weber K, Matzel K, Papadopoulos T, Merkel S. Standardized surgery for colonic cancer: complete mesocolic excision and central ligation–technical notes and outcome. Colorectal Dis. 2009;11:354–364.
    1. Bertelsen CA, Neuenschwander AU, Jansen JE, et al.; Danish Colorectal Cancer Group. Disease-free survival after complete mesocolic excision compared with conventional colon cancer surgery: a retrospective, population-based study. Lancet Oncol. 2015;16:161–168.
    1. Birbeck KF, Macklin CP, Tiffin NJ, et al. Rates of circumferential resection margin involvement vary between surgeons and predict outcomes in rectal cancer surgery. Ann Surg. 2002;235:449–457.
    1. Park JS, Huh JW, Park YA, et al. A circumferential resection margin of 1 mm is a negative prognostic factor in rectal cancer patients with and without neoadjuvant chemoradiotherapy. Dis Colon Rectum. 2014;57:933–940.

Publication types

MeSH terms