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Published in: Techniques in Coloproctology 10/2020

01-10-2020 | Cytostatic Therapy | Review

Neoadjuvant chemotherapy in locally advanced colon cancer: a systematic review

Authors: J. Arredondo, E. Pastor, V. Simó, M. Beltrán, C. Castañón, M. C. Magdaleno, I. Matanza, M. Notarnicola, B. Ielpo

Published in: Techniques in Coloproctology | Issue 10/2020

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Abstract

Background

Preoperative or neoadjuvant chemotherapy (NAC) has emerged as a novel alternative to treat locally advanced colon cancer (LACC), as in other gastrointestinal malignancies. However, evidence of its efficacy and safety has not yet been gathered in the literature. The aim of the present study was to perform an extensive review of the scientific evidence for NAC in patients with LACC.

Methods

PubMed, EMBASE, MEDLINE and Cochrane Library were searched for a systematic review of the literature from 2010 to 2019. Six eligible studies were included, with a total of 27,937 patients, 1232 of them (4.4%) treated with NAC. There were only one randomized controlled trial, three phase II non-randomized single arm studies and two retrospective studies.

Results

The baseline computed tomography scan showed that most of patients had a T3 tumor. The completion rate of the planned neoadjuvant treatment ranged from 52.5 to 93.8%. Between 97.2 and 100% of patients had the scheduled surgery. The median tumor volume reduction after NAC ranged from 62.5 to 63.7%. The anastomotic leak rate in the NAC group ranged from 0 to 7%, with no cases of postoperative mortality. There was major pathological tumor regression in 4–34.7% of cases. Between 84 and 100% of NAC patients had R0-surgery. Survival after NAC seems to be encouraging although significant improvement has only been proven in T4b tumours.

Conclusions

According to our systematic review, the NAC may be a safe and effective emerging therapeutic alternative for treating LACC. This approach, which is still being tested, increases the reliance on accurate radiological staging.
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Metadata
Title
Neoadjuvant chemotherapy in locally advanced colon cancer: a systematic review
Authors
J. Arredondo
E. Pastor
V. Simó
M. Beltrán
C. Castañón
M. C. Magdaleno
I. Matanza
M. Notarnicola
B. Ielpo
Publication date
01-10-2020
Publisher
Springer International Publishing
Published in
Techniques in Coloproctology / Issue 10/2020
Print ISSN: 1123-6337
Electronic ISSN: 1128-045X
DOI
https://doi.org/10.1007/s10151-020-02289-4

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