Journal
WORLD JOURNAL OF GASTROENTEROLOGY
Volume 22, Issue 18, Pages 4459-4465Publisher
BAISHIDENG PUBLISHING GROUP INC
DOI: 10.3748/wjg.v22.i18.4459
Keywords
Progenitor cell origin; Pathology classification; Combined hepatocellular cholangiocarcinoma
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Combined hepatocellular cholangiocarcinoma (CHC) accounts for 0.4%-14.2% of primary liver cancer cases and possesses pathological features of both hepatocellular carcinoma and cholangiocarcinoma. Since this disease was first described and classified in 1949, the classification of CHC has continuously evolved. The latest definition and classification of CHC by the World Health Organization is based on the speculation that CHC arises from hepatic progenitor cells. However, there is no evidence demonstrating the common origin of different components of CHC. Furthermore, the definition of CHC subtypes is still ambiguous and the identification of CHC subtype when a single tumor contains many components has remained unresolved. In addition, there is no summary on the newly recognized histopathology features or the contribution of CHC components to prognosis and outcome of this disease. Here we provide a review of the current literature to address these questions.
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