Objective By analyzing the correlation between the clinicopathological features of patients with colorectal liver metastases (CRLM) and their postoperative survival, this study is aimed to identify new and accurate prognostic indicators on the prognoses to provide a reference of the treatment strategy selection for patients with CRLM. Methods The clinical data of 233 patients with CRLM who received operation treatments in the Eastern Hepatobiliary Hospital of the Second Military Medical University from January 2006 to December 2009 were retrospectively investigated, and their clinicopathological features, as well as their prognosis were analyzed. The survival curve was drawn by Kaplan-Meier method, and the survival rates were analyzed by log-rank test. Parametric survival analysis was used to identify predictors of cancer-specific survival. Results The median survival time after cancer resection was 37.0 months, with cumulative 1-year, 3-year, and 5-year survival rates of 93.0%, 61.0%, and 17.0%, respectively. The median survival time, with cumulative 3-year, and 5-year survival rates of patients who had received radical operations was better than the others who received palliative operations:40.53 months vs 27.20 months, 59.0% vs 29.0%, and 20.0% vs 0(P < 0.05), respectively. In overall surviva, the results of univariate analysis showed that 13 factors, including surgical method, the first relapse after liver metastasis resection, the number of liver metastases, surgical margin, other unresectable extrahepatic metastases or resectable invasion in blood vessels or the surrounding tissue, whether any chronic liver disease was associ-ated, preoperative serum CEA level, preoperative serum CA19-9 leve, the position of the liver metastases, whether the liver metastasis capsule was complete, TNM stagethe of primary cancer, whether the liver metastasis was simultaneous liver metastases, and the maximum diameter of the liver metastases, were closely related to the clinicopathological features associated with prognosis and the differences were statistically significant (P < 0.05). The results of multivariate survival analysis demonstrated that received palliative operations, simultaneous liver metastases, there were other unresectable extrahepatic metastases or resectable invasion in blood vessels or the surrounding tissue, liver metastases without a complete capsule, the number of liver metastases appeared as multiple and widedistribution, unassociated chronic liver disease of the patients, the maximum diameter of the liver metastases>3 cm, were the independent risk factors affecting the postoperative survival of the patients with CRLM (P < 0.05). Conclusions It is important for long-term survival of patients with CRLM who were received operations. Received palliative operations, simultaneous liver metastases, there were other unresectable extrahepatic metastases or resectable invasion in blood vessels or the surrounding tissue, liver metastases without a complete capsule, the number of liver metastases appeared as multiple and widedistribution, unassociated chronic liver disease of the patients, the maximum diameter of the liver metastases>3 cm, were the independent risk factors affecting the postoperative survival of the patients with CRLM.

Citation： ZHUFeng-feng, SIMAHui, SONGJin-chao. Correlation Between The Clinicopathological Features of Patients with Colorectal Liver Metastases and Their Postoperative Survival. CHINESE JOURNAL OF BASES AND CLINICS IN GENERAL SURGERY, 2016, 23(7): 781-786. doi: 10.7507/1007-9424.20160206 Copy