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HOME > J Korean Soc Coloproctol > Volume 23(6); 2007 > Article
Original Article
Is a Short Distal Resection Margin of Less than One Centimeter in a Sphincter-saving Resection for Rectal Cancer Oncologically Safe?.
Cho, Min Jeong , Yu, Chang Sik , Park, In Ja , Jeong, Sang Hoon , Chae, Pheung Ha , Hong, Dong Heun , Kim, Dea Dong , Kim, Hee Cheol , Kim, Jin Cheon
Journal of the Korean Society of Coloproctology 2007;23(6):454-459
DOI: https://doi.org/10.3393/jksc.2007.23.6.454
Colorectal Clinic, Asan Medical Center and Department of Surgery, University of Ulsan College of Medicine, Seoul, Korea. csyu@amc.seoul.kr
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Abstract

PURPOSE
Sphincter preservation is one of the main goals in the treatment of rectal cancer. The aim of this study was to evaluate the oncologic safety of a sphincter-saving resection with a distal resection margin of less than 1 cm.
METHODS
Two hundred forty-eight patients who underwent a sphincter-saving resection between June 1989 and December 2002 and who had a confirmed distal resection margin of less than 1 cm on pathologic examination were included. All patients were evaluated for local and systemic recurrences.
RESULTS
The median follow-up period was 45 (6~144) months. The mean length of distal resection margin was 0.79+/-0.26 cm. Lower rectalcancer was most common (56.5%). Forty patients (16.1%) experienced recurrence. The local recurrence rate was 3.6%, systemic recurrence rate was 11.7%, and the combined local and systemic recurrence rate was 0.4%. In systemic recurrence, the liver was the most common site, followed by the lung. Among stage II & III groups, patients who underwent adjuvant chemoradiotherapy experienced significantly lower local recurrence compared to patients in the chemotherapy-only or the no-adjuvant group (2.6%, 12.9%, 8.7%, P=0.05). The length of distal resection margin, the total mesorectal excision, the location of tumor, sex, histology, and stage were not associated with local recurrence.
CONCLUSIONS
A distal resection margin of less than 1 cm in a sphincter-saving resection showed acceptableoncologic outcomes. Adjuvant chemoradiotherapy were beneficial to reduce local recurrence in the stage II and the stage III groups.

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