EGFR and intrahepatic cholangiocarcinoma: Expression of EGFR and vascular endothelial growth factor (VEGF) were highly elevated in 27.4% (29/109) and 53.8 (57/106) of ICC patients, respectively, and 19.2% (25/130) and 59.2% (77/130) of ECC patients, respectively [11,12].