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Chinese Journal of Colorectal Diseases(Electronic Edition) ›› 2026, Vol. 15 ›› Issue (01): 45-57. doi: 10.3877/cma.j.issn.2095-3224.2026.01.005

• Original Article • Previous Articles    

Analysis of prognosis following total colectomy for familial adenomatous polyposis associated colorectal cancer

Chai Lyu, Zikun Wu, Wenpu Zhu, Weijie Zhao, Guanglong Chen, Huihan Ai, Hang Yang, Banghe Bao, Faqiang Liu, Zhi Li()   

  1. Department of General Surgery, the Affiliated Cancer Hospital of Zhengzhou University & He’nan Cancer Hospital, Zhengzhou 450008, China
  • Received:2025-10-28 Online:2026-02-25 Published:2026-03-20
  • Contact: Zhi Li

Abstract:

Objective

To compare the disparities in prognosis and influencing factors between patients with familial adenomatous polyposis associated colorectal cancer (FAP-CRC) and sporadic synchronous multiple primary colorectal cancer (SSM-CRC) undergoing total colectomy with ileorectal anastomosis (TC-IRA).

Methods

The clinical and prognostic data of patients who underwent TC-IRA treatment at the Affiliated Cancer Hospital of Zhengzhou University & He’nan Cancer Hospital from January 2010 to June 2020 were retrospectively collected. Propensity score matching (PSM) was performed at a 1:2 ratio (FAP-CRC vs. SSM-CRC) to balance patient characteristics. Survival differences between two groups and across subgroups were compared using the Kaplan-Meier method with the log-rank test. Furthermore, univariate and multivariate Cox proportional hazards regression analyses were employed to identify independent risk factors affecting prognosis.

Results

After propensity score matching, seventy-three patients with FAP-CRC and 146 patients with SSM-CRC were included in this study. The 5-years overall survival (OS) rate was significantly higher in the FAP-CRC group than in the SSM-CRC group (87.5% vs. 78.1%, χ2=4.804, P=0.028). However, no significant difference was observed in the disease-free survival (DFS) between the two groups. Subgroup analyses consistently demonstrated higher OS rate for FAP-CRC, including females, age<55 years, carcinoembryonic antigen(CEA)≤5 ng/mL, multiple tumor lesions, lymph node metastasis, absence of cancerous node, absence of lymphovascular invasion and absence of perineural invasion. Univariate and multivariate Cox regression analyses identified tumor recurrence (P<0.001) as independent risk factor for two group patients.

Conclusion

FAP-CRC patients who underwent TC-IRA had a better long-term survival prognosis than SSM-CRC patients, particularly in subgroups such as females, younger individuals (<55 years), those with low CEA levels (≤5 ng/mL), those with multiple tumor lesions, those with lymph node metastasis, and those without cancerous node or lymphovascular invasion or perineural invasion. Tumor recurrence were identified as independent risk factor influencing postoperative survival in FAP-CRC patients.

Key words: Colorectal cancer, Total colectomy with ileorectal anastomosis, Familial adenomatous polyposis, Sporadic synchronous multiple primary colorectal cancer, Prognosis

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