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Outcomes of neoadjuvant chemoradiotherapy followed by total mesorectal excision surgery for locally advanced rectal cancer: a single-institution experience.

作者信息

Tseng Michelle Shu Fen, Zheng Huili, Ng Ivy Wei Shan, Leong Yiat Horng, Leong Cheng Nang, Yong Wei Peng, Cheong Wai Kit, Tey Jeremy Chee Seong

机构信息

Department of Radiation Oncology, National University Cancer Institute, National University Health System, Singapore.

Health Promotion Board, Singapore.

出版信息

Singapore Med J. 2018 Jun;59(6):305-310. doi: 10.11622/smedj.2017105. Epub 2017 Nov 13.


DOI:10.11622/smedj.2017105
PMID:29167909
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6024210/
Abstract

INTRODUCTION: Neoadjuvant chemoradiotherapy (CRT) followed by total mesorectal excision (TME) surgery for locally advanced rectal cancer has been shown to improve local control and reduce toxicity, as compared to adjuvant CRT. We reported the outcomes of our patients with locally advanced rectal cancer treated at National University Hospital, Singapore. METHODS: From April 2002 to December 2014, 117 patients with T3/4, N0/+, M0 rectal cancer received neoadjuvant CRT followed by TME surgery. The treatment regimen comprised a total radiotherapy dose of 50.4 Gy in 28 daily fractions delivered concurrently with 5-fluorouracil or capecitabine chemotherapy over 5.5 weeks. All patients were planned for TME surgery. Local control, disease-free survival, overall survival and treatment toxicities were analysed. RESULTS: Median follow-up was 34 (range 2-122) months. 11.5% (13/113) of patients achieved a pathological complete response (pCR) and 72.6% (85/117) had either tumour or nodal downstaging following neoadjuvant CRT. 5.2% (5/96) of patients had Grade 3 acute toxicities (dermatitis and diarrhoea) and 3.1% (3/96) had Grade 3 late toxicities (fistula and stricture). There was no Grade 4 toxicity noted. The five-year local recurrence, disease-free survival and overall survival rates were 4.5%, 65.7% and 80.6%, respectively. Multivariate analysis showed that nodal positivity was a predictor of poor disease-free survival and poor overall survival. Tumour downstaging and pCR did not improve outcomes. CONCLUSION: Our outcomes were comparable to internationally published data, and this treatment regimen remains the standard of care for locally advanced rectal cancer in our local population.

摘要

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[1]
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引用本文的文献

[1]
Identification of patients with locally advanced rectal cancer eligible for neoadjuvant chemotherapy alone: Results of a retrospective study.

Cancer Med. 2023-6

[2]
Analysis of Survival in Complete Pathological Response after Long-Course Chemoradiotherapy in Patients with Advanced Rectal Cancer.

Curr Oncol. 2023-1-12

[3]
Survival landscape of different tumor regression grades and pathologic complete response in rectal cancer after neoadjuvant therapy based on reconstructed individual patient data.

BMC Cancer. 2021-11-13

[4]
Radiation therapy for rectal cancer.

J Gastrointest Oncol. 2019-12

[5]
MAP17 (PDZK1IP1) and pH2AX are potential predictive biomarkers for rectal cancer treatment efficacy.

Oncotarget. 2018-8-31

本文引用的文献

[1]
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Radiat Oncol. 2014-3-7

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Preoperative chemoradiotherapy with oxaliplatin and tegafur-uracil in locally advanced rectal cancer: pathologic complete response rate and preliminary results of overall and disease-free survival in a single institute in Taiwan.

J Chin Med Assoc. 2014-3

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