Influence of surgical margins on outcome in patients with intrahepatic cholangiocarcinoma: a multicenter study by the AFC-IHCC-2009 study group

Objective:Define the optimal surgical margin in patients undergoing surgery for intrahepatic cholangiocarcinoma (IHCC).Background Data:Surgery is the most effective treatment for IHCC. However, the influence of R1 resection on outcome is controversial and that of margin width has not been evaluated.