MRI: NA, Biopsy: Initial resected tumor - Low-grade intrahepatic cholangiocarcinoma without vascular invasion, CK7+, CK19+, CK20-, p53+, PAS-, CK20-. Subsequent right hepatectomy: focal bile duct hamartoma w/o signs of malignancy. This evidence concerns the gene KRT20 and intrahepatic cholangiocarcinoma.