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Published in: Techniques in Coloproctology 2/2021

01-02-2021 | Colon Cancer | Review

Perineural invasion is increased in patients receiving colonic stenting as a bridge to surgery: a systematic review and meta-analysis

Authors: I. Balciscueta, Z. Balciscueta, N. Uribe, E. García-Granero

Published in: Techniques in Coloproctology | Issue 2/2021

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Abstract

Background

In recent years, there has been growing concern about the potential association of stent placement as a bridge to surgery in malignant colon obstruction and some anatomopathological findings that could lead to worsening long-term cancer outcomes, such as perineural, vascular and lymphatic invasion. The aim of the present review was to assess the pathological changes found in surgical specimens after stent placement for obstructing colon cancer vs. emergency surgery, and the impact of perineural invasion on survival rates

Methods

MEDLINE, Cochrane Library, Ovid and ISRCTN Registry were searched, with no restrictions. We performed four meta-analyses to estimate the pooled effect sizes using a random effect model. The outcomes were perineural, vascular and lymphatic invasion rates, and 5-year overall survival rate in patients with obstructive colon cancer, depending on the presence or absence of perineural invasion.

Results

Ten studies with a total of 1273 patients were included in the meta-analysis. We found that patients in the stent group had a significantly higher risk of perineural (OR 1.98, 95% CI 1.22–3.21; p = 0.006) and lymphatic invasion (OR 1.45, 95% CI 1.10–1.90; p = 0.008). Furthermore, patients with positive perineural invasion had almost twice the risk of dying compared to those with no perineural invasion (HR 1.92, 95% CI 1.22–3.02; p = 0.005).

Conclusions

Stent placement as a bridge to surgery in colorectal cancer patients modifies the pathological characteristics such as perineural and lymphatic invasion, and this may worsen the long-term prognosis of patients. The presence of perineural infiltration in obstructed colon cancer decreases the long-term survival of patients.
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go back to reference Spannenburg L, Sanchez Gonzalez M, Brooks A, et al (2020) Surgical outcomes of colonic stents as a bridge to surgery versus emergency surgery for malignant colorectal obstruction: a systematic review and meta-analysis of high quality prospective and randomised controlled trials [published online ahead of print, 2020 May 7]. Eur J Surg Oncol. 0748–7983(20):30449–2. https://doi.org/10.1016/j.ejso.2020.04.052 Spannenburg L, Sanchez Gonzalez M, Brooks A, et al (2020) Surgical outcomes of colonic stents as a bridge to surgery versus emergency surgery for malignant colorectal obstruction: a systematic review and meta-analysis of high quality prospective and randomised controlled trials [published online ahead of print, 2020 May 7]. Eur J Surg Oncol. 0748–7983(20):30449–2. https://​doi.​org/​10.​1016/​j.​ejso.​2020.​04.​052
Metadata
Title
Perineural invasion is increased in patients receiving colonic stenting as a bridge to surgery: a systematic review and meta-analysis
Authors
I. Balciscueta
Z. Balciscueta
N. Uribe
E. García-Granero
Publication date
01-02-2021
Publisher
Springer International Publishing
Published in
Techniques in Coloproctology / Issue 2/2021
Print ISSN: 1123-6337
Electronic ISSN: 1128-045X
DOI
https://doi.org/10.1007/s10151-020-02350-2

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