Fig. 8From: Lower bile duct metastasis from rectal cancer after surgery for liver metastasis and intrahepatic bile duct metastasis: a case reportImmunohistochemical staining of all specimens in this case (× 40, original magnification). All specimens revealed a well to moderately differentiated tubular adenocarcinoma. They also revealed similar CK7 and CK20 expression patterns: negative for CK7 and positive for CK20Back to article page