Impact of target volume delineation accuracy on locoregional control and survival after postoperative radiotherapy for colorectal cancer

doi:10.4240/wjgs.117559

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World Journal of Gastrointestinal Surgery

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1948-9366

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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.

World J Gastrointest Surg. Aug 27, 2026; 18(8): 117559
Published online Aug 27, 2026. doi: 10.4240/wjgs.117559

Table 2 Comparison of survival outcomes between the two groups, n (%)

Survival indicator	Accurate target volume group (n = 126)	Inaccurate target volume group (n = 92)	χ² value	P value
3-year local control rate (95%CI)	92.1 (87.2-97.0)	78.3 (69.8-86.8)	8.742	0.003
3-year regional control rate (95%CI)	94.4 (90.1-98.7)	81.5 (73.5-89.5)	9.328	0.002
3-year disease-free survival rate (95%CI)	83.6 (77.1-90.1)	66.8 (57.2-76.4)	10.156	0.001
3-year overall survival rate (95%CI)	89.2 (83.6-94.8)	72.5 (63.4-81.6)	11.483	< 0.001

CI: Confidence interval.

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Citation: Xing Y, Gu M. Impact of target volume delineation accuracy on locoregional control and survival after postoperative radiotherapy for colorectal cancer. World J Gastrointest Surg 2026; 18(8): 117559
URL: https://www.wjgnet.com/1948-9366/full/v18/i8/117559.htm
DOI: https://dx.doi.org/10.4240/wjgs.117559