Journal of Yeungnam Medical Science

영남대 의대 학술지 편집위원회 (Yeungnam University College of Medicine, Yeungnam University Institute Medical Science)
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Prognostic role of preoperative carcinoembryonic antigen levels in colorectal cancer: propensity score matching

  • Kim, Cho Shin (Department of surgery, Yeungnam University College of Medicine) ;
  • Kim, Sohyun (Department of surgery, Yeungnam University College of Medicine)
  • 투고 : 2017.10.01
  • 심사 : 2017.11.06
  • 발행 : 2017.12.31
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초록

Background: This study was conducted to investigate preoperative carcinoembryonic antigen (CEA) as a prognostic factor in colorectal cancer. Methods: Between January 2000 and July 2011, 1298 patients with primary adenocarcinoma colorectal cancer without metastasis, who underwent curative resection were retrospectively identified. The patients were divided into two groups according to serum CEA level at primary diagnosis: a high CEA (HCEA) group (serum CEA ${\geq}6ng/mL$) and a normal CEA (NCEA) group (serum CEA <6 ng/mL). A 1:1 propensity score matching analysis was applied to reduce bias. Finally, 364 patients were enrolled in this study. Matched variables were age, gender, preoperative chemoradiotherapy, tumor site, cell differentiation and pathologic stage. Results: The clinicopathological characteristics of the two groups did not differ significantly difference. The systemic metastasis rate was 16.5% (30/182) and 25.3% (46/182) in the NCEA and HCEA groups, respectively (p=0.039). There were no significant differences in local recurrence or metastatic sites between groups. The 5-year disease-free survival (DFS) rate of the HCEA group was worse than that of the NCEA group; however, there was no significant difference in overall survival between the two groups. Conclusion: Elevated preoperative CEA was related to frequent systemic recurrence and low DFS. Therefore, elevated preoperative CEA could be considered a prognostic factor for worse clinical outcomes in patients with colorectal cancer.

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참고문헌

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