Extended follow-up following aggressive resection of locally recurrent rectal cancer.

Authors

null

Francis Si Wai Zih

University of Toronto, Toronto, ON, Canada

Francis Si Wai Zih , Julie I. Hallet , Allison Pang , Bryan J Wells , Calvin Law , Andrew Smith , Carol Jane Swallow

Organizations

University of Toronto, Toronto, ON, Canada, Odette Cancer Centre, Sunnybrook Health Sciences Centre; University of Toronto, Toronto, ON, Canada, University of Calgary, Calgary, AB, Canada, Sunnybrook Health Sciences Centre, Toronto, ON, Canada, Department of Surgery, University of Toronto, Toronto, ON, Canada

Research Funding

No funding sources reported

Background: The literature on resection of locally recurrent rectal cancer (LRRC) consists largely of case series based on retrospective data collection with median follow-up of less than 36 months. The goal of the present study was to determine outcomes after 5 to 10 yrs of follow-up in a group of patients managed with a consistent approach. Methods: We identified patients who underwent resection of LRRC between 06/1997 and 05/2005 from the prospective colorectal cancer databases in two cancer centers at the University of Toronto, Canada. Median follow-up time for the entire cohort (n=52) was 44 months; median follow-up in surviving patients (n=25) was 91 months. Results: All 52 patients (median age=60, 31 male) underwent grossly complete resection of their locoregional recurrence; 6 had synchronous distant metastases at the time of LRRC resection. The most common operative procedure for LRRC was a pelvic exenteration with sacrectomy (n=22). 24 patients had received adjuvant XRT for their primary tumor and 26 radionaïve patients received XRT prior to resection for recurrence. At last follow-up, 16 patients were alive with no evidence of disease; 9 alive with disease; 26 had died of disease; and 1 died of other causes. For the entire cohort (n=52), 5-yr and 8-yr Overall Survival (OS) were 49% and 46%, respectively; median OS was 60 months. M1 disease at the time of LRRC resection was associated with inferior OS (p=0.04). Predictors of improved OS included node negative primary cancer (p=0.02); receipt of systemic chemotherapy prior to LRRC resection (p=0.02); and R0 margin of resection on LRRC (p<0.0001). Sacrectomy (n=30) was not a prognostic factor. In patients with no distant metastases at the time of LRRC resection (M0, n=46), 5-yr and 8-yr re-recurrence-free survival were 35% and 31%, respectively. Patients who were clinically M0 at time of LRRC resection in whom R0 resection was achieved (n=36) had 5-yr and 8-yr OS of 65% and 61%, respectively; in that group, re-recurrence-free survival at 5 and 8 yrs were 45% and 39%, respectively. Conclusions: Margin negative resection of LRRC can result in extended survival beyond 5 yrs. Use of preoperative systemic chemotherapy and sacrectomy may be associated with improved results.

Disclaimer

This material on this page is ©2024 American Society of Clinical Oncology, all rights reserved. Licensing available upon request. For more information, please contact licensing@asco.org

Abstract Details

Meeting

2014 ASCO Annual Meeting

Session Type

Poster Session

Session Title

Gastrointestinal (Colorectal) Cancer

Track

Gastrointestinal Cancer—Colorectal and Anal

Sub Track

Colorectal Cancer

Citation

J Clin Oncol 32:5s, 2014 (suppl; abstr 3635)

DOI

10.1200/jco.2014.32.15_suppl.3635

Abstract #

3635

Poster Bd #

98

Abstract Disclosures

Similar Abstracts

Abstract

2024 ASCO Gastrointestinal Cancers Symposium

Timing of primary tumor resection after systemic chemotherapy initiation among patients with metastatic colon cancer.

First Author: Munir Buhaya

First Author: Sameh Hany Emile

First Author: Nuri Karadurmus