Akira Watanabe1, Kenichiro Araki2, Norihumi Harimoto2, Norio Kubo2, Takamichi Igarashi2, Norihiro Ishii2, Takahiro Yamanaka2, Kei Hagiwara2, Hiroyuki Kuwano3, Ken Shirabe2. 1. Department of Hepatobiliary and Pancreatic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan. akira_watanabe@gunma-u.ac.jp. 2. Department of Hepatobiliary and Pancreatic Surgery, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan. 3. Department of General Surgical Science, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
Abstract
BACKGROUND: Colorectal cancer is common, and its incidence is increasing throughout the world. The liver is a major metastatic site, and colorectal liver metastasis (CRLM) has a poor prognosis. Although liver resection is the most effective therapy for CRLM, postoperative recurrence is common. Thus, prognostic markers for CRLM are greatly needed. D-dimer, a fibrin cleavage product, has been shown to be related to colorectal tumor progression, and is also associated with malignant progression and recurrence in various cancers. Therefore, we evaluated the value of D-dimer in predicting the prognosis in CRLM. METHODS: We retrospectively evaluated 90 cases of resected CRLM to determine the correlation between D-dimer and patient survival. The cut-off value for D-dimer levels was determined using receiver operating characteristic curve analysis. RESULTS: Significant differences occurred in the recurrence group with higher D-dimer levels (P = 0.00736*), while the optimal cut-off value was 0.6 µg/mL. High D-dimer levels (≥ 0.6 µg/mL) were associated with poor recurrence-free survival (RFS; P = 0.0000841*) and cancer-specific survival (CSS; P = 0.00615*). In the multivariate analysis, D-dimer correlated with CRLM prognosis and independently predicted RFS (P = 0.0179*). CONCLUSION: High D-dimer levels were associated with poor RFS and CSS. D-dimer was an independent prognostic factor of RFS. Therefore, D-dimer may help predict recurrence and prognosis in patients with CRLM.
BACKGROUND:Colorectal cancer is common, and its incidence is increasing throughout the world. The liver is a major metastatic site, and colorectal liver metastasis (CRLM) has a poor prognosis. Although liver resection is the most effective therapy for CRLM, postoperative recurrence is common. Thus, prognostic markers for CRLM are greatly needed. D-dimer, a fibrin cleavage product, has been shown to be related to colorectal tumor progression, and is also associated with malignant progression and recurrence in various cancers. Therefore, we evaluated the value of D-dimer in predicting the prognosis in CRLM. METHODS: We retrospectively evaluated 90 cases of resected CRLM to determine the correlation between D-dimer and patient survival. The cut-off value for D-dimer levels was determined using receiver operating characteristic curve analysis. RESULTS: Significant differences occurred in the recurrence group with higher D-dimer levels (P = 0.00736*), while the optimal cut-off value was 0.6 µg/mL. High D-dimer levels (≥ 0.6 µg/mL) were associated with poor recurrence-free survival (RFS; P = 0.0000841*) and cancer-specific survival (CSS; P = 0.00615*). In the multivariate analysis, D-dimer correlated with CRLM prognosis and independently predicted RFS (P = 0.0179*). CONCLUSION: High D-dimer levels were associated with poor RFS and CSS. D-dimer was an independent prognostic factor of RFS. Therefore, D-dimer may help predict recurrence and prognosis in patients with CRLM.
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