Table of Contents
International Scholarly Research Notices
Volume 2015 (2015), Article ID 710569, 10 pages
http://dx.doi.org/10.1155/2015/710569
Review Article

Systematic Review: Adjuvant Chemotherapy for Locally Advanced Rectal Cancer with respect to Stage of Disease

1General Surgery Department, Pilgrim Hospital, Sibsey Road, Boston, Lincolnshire PE21 9QS, UK
2General Surgery Department, Blackpool Victoria Hospital, 38 Whinney Heys Road, Blackpool, Lancashire FY3 8NR, UK

Received 24 July 2014; Revised 12 January 2015; Accepted 15 January 2015

Academic Editor: Mustafa Benekli

Copyright © 2015 Shahab Hajibandeh and Shahin Hajibandeh. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Background. Recent meta-analysis of 21 randomised controlled trials (RCTs) supports the use of adjuvant chemotherapy for nonmetastatic rectal carcinoma. In order to define a subgroup of patients who can potentially benefit from postoperative adjuvant chemotherapy, this study aims to review trials investigating adjuvant chemotherapy with respect to stage of disease in patients with locally advanced rectal cancer who had undergone surgery for cure (stage II and stage III). Methods. We searched electronic information sources to identify randomised trials evaluating adjuvant chemotherapy in patients with stages II and III rectal cancer with overall survival or disease-free survival as outcomes. Scottish Intercollegiate Guidelines Network notes on methodology were used to assess the methodological quality of the selected studies. Random-effects models were applied to calculate pooled outcome data. Results. Eight studies reporting total of 5527 patients were selected for analysis. Adjuvant chemotherapy was associated with statistically significant improvement in disease-free survival and overall survival compared to surgery alone in both stage II and stage III cancer. Conclusions. This study indicates that both stage II and stage III rectal cancer patients may benefit from postoperative adjuvant chemotherapy. However, the benefits of adjuvant chemotherapy for patients who already had neoadjuvant chemoradiation still remain unknown.