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Cholangiocarcinoma

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Encyclopedia of Cancer

Synonyms

Bile duct carcinoma; Cholangiocellular carcinoma

Definition

Cholangiocarcinoma refers to malignancy within the biliary duct system (Bile Duct Neoplasms) and is distinct from gallbladder cancer. Cholangiocarcinomas generally have features of biliary tract epithelium, such as a glandular appearance, small regular nuclei, and scant cytoplasm. Tumor cells often express cytokeratins, mucin, and cancer-associated antigen 19-9, a carbohydrate antigen that is used as a tumor marker in serum. It is thought to be a sialylated Lewis blood group antigen. CA19-9 levels are elevated in many gastrointestinal malignancies including cholangiocarcinoma and pancreatic cancer, as well as some nonmalignant conditions such as cholangitis and peritoneal inflammation/infection. Patients who have a genetic deficiency in a fucosyltransferase specified by the Le gene are Lewisa-b- and are unable to make this antigen; thus CA19-9 testing in Lewisa-b- patients can be falsely negative.

  • 95 % of bile duct...

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References

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Correspondence to Justin L. Mott .

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© 2014 Springer-Verlag Berlin Heidelberg

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Mott, J.L., Gores, G.J. (2014). Cholangiocarcinoma. In: Schwab, M. (eds) Encyclopedia of Cancer. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27841-9_1106-8

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  • DOI: https://doi.org/10.1007/978-3-642-27841-9_1106-8

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  • Online ISBN: 978-3-642-27841-9

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