Scientific article
Open access

Complete mesocolic excision for right hemicolectomy : an updated systematic review and meta-analysis

Published inTechniques in coloproctology, vol. 27, no. 11, p. 979-993
Publication date2023-08-26
First online date2023-08-26

Purpose: Complete mesocolic excision improves lymphadenectomy for right hemicolectomy and respects the embryological planes. However, its effect on cancer-free and overall survival is questioned. Therefore, we aimed to determine the potential benefits of the technique by performing a systematic review of the literature and meta-analysis of the available evidence.

Methods: Web of Science, PubMed/Medline, and Embase were searched on February 22, 2023. Original studies on short- and long-term oncological outcomes of adult patients undergoing right hemicolectomy with complete mesocolic excision as a treatment for primary colon cancer were considered for inclusion. Outcomes were extracted and pooled using a model with random effects.

Results: A total of 586 publications were identified through database searching, and 18 from citation searching. Exclusion of 552 articles left 24 articles for inclusion. Meta-analysis showed that complete mesocolic excision increased the lymph node harvest (5 studies, 1479 patients, MD 9.62, 95% CI 5.83-13.41, p > 0.0001, I284%), 5-year overall survival (5 studies, 2381 patients, OR 1.88, 95% CI 1.14-3.09, p = 0.01, I266%), 5-year disease-free survival (4 studies, 1376 patients, OR 2.21, 95% CI 1.51-3.23, p < 0.0001, I20%) and decreased the incidence of local recurrence (4 studies, 818 patients, OR 0.27, 95% CI 0.09-0.79, p = 0.02, I20%) when compared to standard right hemicolectomy. Perioperative morbidity was similar between the techniques (8 studies, 3899 patients, OR 1.04, 95% CI 0.89-1.22, p = 0.97, I20%).

Conclusion: Meta-analysis of observational and randomised studies showed that right hemicolectomy with complete mesocolic excision for primary right colon cancer improves oncologic results without increasing morbidity/mortality. These results need to be confirmed by high-quality evidence and randomised trials in selected patients to assess who may benefit from the procedure.

  • Cancer
  • Colon
  • Complete mesocolic excision
  • D3 lymphadenectomy
  • Surgery
Citation (ISO format)
DE LANGE, Glenn et al. Complete mesocolic excision for right hemicolectomy : an updated systematic review and meta-analysis. In: Techniques in coloproctology, 2023, vol. 27, n° 11, p. 979–993. doi: 10.1007/s10151-023-02853-8
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ISSN of the journal1123-6337

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Creation09/06/2023 2:17:52 PM
First validation03/26/2024 10:30:30 AM
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