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Updated: May 4, 2026

Competing-Risk Nomogram for Predicting Cancer-Specific Survival in Multiple Primary Colorectal Cancer Patients after Surgery
Published on: September 27, 2024
[Risk factors for tumor recurrence after curative resection in patients with Stage IIIa colon and rectosigmoid
Yu Shigemasa1, Shousaburo Oyama, Yasumasa Hashimoto
1Dept. of Surgery, Sasebo Chuo Hospital.
Purpose:
The aim of this study was to elucidate the risk factors for recurrence of Stage IIIa colon and rectosigmoid cancer.
Patients And Methods:
The subjects were 93 patients with Stage IIIa colon and rectosigmoid cancer who underwent radical colectomy in this department between 2001 and 2011. Various risk factors for recurrence were examined.
Results:
The overall recurrence rate was 18% (17/93 cases). Univariate analysis identified a risk factor for recurrence: depth of tumor invasion( ≥serosa exposed[ SE])(hazard ratio[ HR] 10.04, 95% confidence interva[l CI] 3.26-30.89, p<0.0001). The rate of 1, 2, and 3-year relapse-free survival of patients with respect to the depth of tumor invasion( ≥SE) were 76%, 61%, and 56%, respectively.
Conclusion:
Tumor depth SE or serosa infiltrating( SI) was a risk factor for the recurrence of Stage IIIa colon and rectosigmoid cancer.

