Predictive Factors of Recurrence for Patients with Intrahepatic Cholangiocarcinoma after Hepatectomy

To identify risk factors related to postoperative recurrence for intrahepatic cholangiocarcinoma (ICC) patients with negative resection margin.A total of 64 ICC patients who underwent resection with negative margin at our center from 2002 to 2010 were recruited in the present study. All clinicopathological characteristics were assessed using univariate analyses. Independent risk factors were identified by Cox regression. Factors significant at a p<0.10 in the univariate analyses were involved in the multivariate analyses. The diagnostic accuracy of the identified risk factors was evaluated using receiver operating curve (ROC).The overall 1-, 3- and 5-year recurrence-free survival rates for patients with ICC were 63%, 32% and 27%, respectively. The most common site of postoperative recurrence was the liver. Lymph node metastasis, perineural invasion and total tumor size greater than 5 cm showed prognostic power in multivariate analysis. The recurrence-free survival rates reduced with the increasing of the number of risk factor for patients with ICC.This study suggested liver was the most common recurrence site and confirmed lymph node metastasis, perineural invasion and total tumor size greater than 5 cm may be associated with poor outcome for ICC patients with negative resection margin.