Bile duct cancer, or cholangiocarcinoma, is a malignant tumour of either the bile ducts within the liver (intrahepatic), or those leading from the liver to the small intestine (extrahepatic).

In summary, neuroendocrine carcinoma of the extrahepatic biliary tracts is ... could improve the prognosis of this highly malignant neoplasm. A written informed consent was obtained from the ...