Published in:
01-11-2014 | Original Article
Prognostic value of preoperative d-dimer and carcinoembryonic antigen levels in patients undergoing intended curative resection for colorectal cancer: a prospective cohort study
Authors:
Ehsan Motavaf, Kåre Gotschalck Sunesen, Mogens Tornby Stender, Ole Thorlacius-Ussing
Published in:
International Journal of Colorectal Disease
|
Issue 11/2014
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Abstract
Purpose
Carcinoembryonic antigen (CEA) has limited value as an isolated predictor for survival among colorectal cancer (CRC) patients. d-dimer (DD) is a strong predictor of survival among metastatic CRC patients, but the prognostic value in non-metastatic CRC patients remains controversial. We examined the prognostic value of preoperative DD levels in relation to CEA levels in non-metastatic, resectable CRC patients.
Methods
Between October 2003 and November 2005, 166 patients were included. We used the Kaplan-Meier method to compute 5-year mortality rates, stratified by preoperative DD and CEA levels. Adjusted Cox regression analysis was used to compute mortality rate ratios (MRRs) during postoperative years 0–1 and 1–5 based on the preoperative CEA and DD levels.
Results
The cumulative 5-year mortality rate was 15 % (95 % confidence interval [CI], 9–25 %) in patients with normal DD and CEA levels, 30 % (CI, 16–53 %) in patients with isolated elevated CEA levels, 37 % (CI, 25–53 %) in patients with isolated elevated DD levels, and 60 % (CI, 37–83 %) in patients with elevated CEA and DD levels. Elevated CEA was associated with an approximately ten-fold increase in mortality within the first postoperative year (adjusted MRR 9.8, CI 2.5–38.3); this association was lost during postoperative years 1–5 (adjusted MRR 1.1, CI 0.5–2.7). Elevated DD was associated with a greater than two-fold increase in mortality during postoperative years 0–1 (adjusted MRR 2.8, CI 0.7–11.0) and 1–5 (adjusted MRR 2.2, CI 1.1–4.8).
Conclusion
DD is a strong predictor of survival among non-metastatic curatively resected CRC patients, particularly in combination with CEA.