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Review
. 2023 Sep 19;38(1):233.
doi: 10.1007/s00384-023-04525-3.

Postoperative inflammatory response in colorectal cancer surgery: a meta-analysis

S L Kampman  1 , B P Smalbroek  2   3 , L M Dijksman  4 , A B Smits  1
Affiliations
Review

Postoperative inflammatory response in colorectal cancer surgery: a meta-analysis

S L Kampman et al. Int J Colorectal Dis. .

Abstract

Purpose: Surgical removal of the cancerous tissue remains the cornerstone of curative treatment for colorectal cancer and results in an inflammatory response. An exaggerated inflammatory response has been implicated in the promotion of tumor proliferation and has shown associations with postoperative complications. Literature on the preferred surgical technique to minimize inflammatory response is inconclusive. Therefore, the aim of this study was to assess the inflammatory response and postoperative incidence of infectious complications following surgery for colorectal cancer.

Methods: Embase, PubMed, and Cochrane databases were searched for RCTs that reported inflammatory parameters as a function of surgical modality only. Data related to CRP or IL-6 levels on postoperative days 1 and 3 and data related to postoperative infections were subject to a pairwise meta-analysis to compare open versus laparoscopic techniques.

Results: The literature search and screening process yielded 4151 studies. Ten studies met criteria, including 568 patients. Only studies on laparoscopic and open surgery were found. Pooled analyses found lower Il-6 and CRP levels on postoperative day 1 and lower CRP levels on postoperative day 3 for laparoscopic surgery compared to open surgery. However, there was no difference in incidence of postoperative infectious complications.

Conclusion: The findings of this study indicate a superior inflammatory profile for laparoscopic surgery compared to an open approach for colorectal cancer surgery. For future research, it would be worthwhile to conduct a randomized controlled trial to compare the postoperative inflammatory response and related clinical outcomes between minimally invasive surgical approaches, including laparoscopic and robot-assisted surgery.

Keywords: Colorectal surgery; Inflammatory; Laparoscopic surgery; Open surgery; Robot-assisted surgery.

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