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已发表论文
结直肠癌患者接受免疫治疗时肠梗阻的风险及管理：一项多中心横断面研究
Authors Hong ZG, Xiao B , Zheng M, Yang W , Zhu L, Liang G, Luo Y, Tang J, Mei W, Yu JH, Hou Z, Wu X, Ding P, Jiang W
Received 27 August 2025
Accepted for publication 31 December 2025
Published 6 January 2026 Volume 2026:15 563431
DOI https://doi.org/10.2147/ITT.S563431
Checked for plagiarism Yes
Review by Single anonymous peer review
Peer reviewer comments 3
Editor who approved publication: Dr Sarah Wheeler
Zhi-Gang Hong,1,2,* Binyi Xiao,1,2,* Muxu Zheng,1,2,* Wanjun Yang,1,2,* Liangjun Zhu,3 Guodong Liang,4 Yuhao Luo,5 Jinghua Tang,1,2 Weijian Mei,1,2 Jie-Hai Yu,1,2 Zhenlin Hou,1,2 Xiaojun Wu,1,2 Peirong Ding,1,2 Wu Jiang1,2
1Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People’s Republic of China; 2State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People’s Republic of China; 3Department of Medical Oncology, The Affiliated Cancer Hospital of Nanjing Medical University & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Nanjing, 210002, People’s Republic of China; 4Department of Colorectal and Stomach Cancer Surgery-1, Jilin Cancer Hospital, Changchun, 130012, People’s Republic of China; 5Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People’s Republic of China
*These authors contributed equally to this work
Correspondence: Wu Jiang, Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, No. 651, Dongfeng East Road, Guangzhou, 510060, People’s Republic of China, Email jiangwu@sysucc.org.cn Peirong Ding, Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, No. 651, Dongfeng East Road, Guangzhou, 510060, People’s Republic of China, Email dingpr@sysucc.org.cn
Background: Despite the remarkable efficacy of immunotherapy for mismatch repair-deficient (dMMR)/microsatellite instability-high (MSI-H) colorectal cancer (CRC), patients may still develop bowel obstruction during tumor regression.
Methods: The study cohort included CRC patients who received immunotherapy at four medical centers. Bowel obstruction risk was assessed, and clinicopathological and molecular features were recorded. A Bayesian model was used to identify risk factors.
Results: A total of 214 patients were reviewed, with 196 patients meeting the eligibility criteria. Bowel obstruction occurred in 22 patients (10.3%) during immunotherapy. Obstruction was more commonly observed in patients with T4 stage tumors (P= 0.008), metastatic disease (P < 0.001), and an impassable lumen on baseline endoscopy (P = 0.022). Multivariable analysis revealed that T4 tumor was identified as an independent risk factor (odds ratios: 8.36, 95% confidence interval: 1.20– 80.34). Among responders with obstructions, the median time to response was 6.1 weeks (interquartile range [IQR]: 5.5– 10.7), the best response was 9.9 weeks (IQR: 5.6– 23.6), and obstruction occurred at 6.6 weeks (IQR: 5.3– 9.2). Notably, 42.9% (6/14) of the patients developed obstructions after laxative use during endoscopy. Four patients (18.2%) required surgery. Three (21.4%) patients in supportive therapy experienced recurrent obstructions. Four patients underwent endoscopic treatment (two stents, two balloon dilatations), all with symptom relief.
Conclusion: Bowel obstruction was common in CRC patients receiving immunotherapy. This risk may be suggested by two clinical features at baseline. Obstructions often occurred after the initial response but before the best overall response. Early detection and proper management may help to prevent or reduce obstructions.
Keywords: colorectal cancer, immunotherapy, bowel obstruction, risk factors, management
1Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People’s Republic of China; 2State Key Laboratory of Oncology in South China, Guangdong Provincial Clinical Research Center for Cancer, Sun Yat-sen University Cancer Center, Guangzhou, 510060, People’s Republic of China; 3Department of Medical Oncology, The Affiliated Cancer Hospital of Nanjing Medical University & Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research, Nanjing, 210002, People’s Republic of China; 4Department of Colorectal and Stomach Cancer Surgery-1, Jilin Cancer Hospital, Changchun, 130012, People’s Republic of China; 5Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, 646000, People’s Republic of China
*These authors contributed equally to this work
Correspondence: Wu Jiang, Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, No. 651, Dongfeng East Road, Guangzhou, 510060, People’s Republic of China, Email jiangwu@sysucc.org.cn Peirong Ding, Department of Colorectal Surgery, Sun Yat-sen University Cancer Center, No. 651, Dongfeng East Road, Guangzhou, 510060, People’s Republic of China, Email dingpr@sysucc.org.cn
Background: Despite the remarkable efficacy of immunotherapy for mismatch repair-deficient (dMMR)/microsatellite instability-high (MSI-H) colorectal cancer (CRC), patients may still develop bowel obstruction during tumor regression.
Methods: The study cohort included CRC patients who received immunotherapy at four medical centers. Bowel obstruction risk was assessed, and clinicopathological and molecular features were recorded. A Bayesian model was used to identify risk factors.
Results: A total of 214 patients were reviewed, with 196 patients meeting the eligibility criteria. Bowel obstruction occurred in 22 patients (10.3%) during immunotherapy. Obstruction was more commonly observed in patients with T4 stage tumors (P= 0.008), metastatic disease (P < 0.001), and an impassable lumen on baseline endoscopy (P = 0.022). Multivariable analysis revealed that T4 tumor was identified as an independent risk factor (odds ratios: 8.36, 95% confidence interval: 1.20– 80.34). Among responders with obstructions, the median time to response was 6.1 weeks (interquartile range [IQR]: 5.5– 10.7), the best response was 9.9 weeks (IQR: 5.6– 23.6), and obstruction occurred at 6.6 weeks (IQR: 5.3– 9.2). Notably, 42.9% (6/14) of the patients developed obstructions after laxative use during endoscopy. Four patients (18.2%) required surgery. Three (21.4%) patients in supportive therapy experienced recurrent obstructions. Four patients underwent endoscopic treatment (two stents, two balloon dilatations), all with symptom relief.
Conclusion: Bowel obstruction was common in CRC patients receiving immunotherapy. This risk may be suggested by two clinical features at baseline. Obstructions often occurred after the initial response but before the best overall response. Early detection and proper management may help to prevent or reduce obstructions.
Keywords: colorectal cancer, immunotherapy, bowel obstruction, risk factors, management