Published online May 21, 2014. doi: 10.3748/wjg.v20.i19.5721
Revised: October 30, 2013
Accepted: December 12, 2013
Published online: May 21, 2014
Processing time: 232 Days and 13.1 Hours
Core tip: Intrahepatic cholangiocarcinoma (ICC) is a devastating malignant tumor. Its incidence and mortality is increasing drastically over the past two decades worldwide, though the cause for this rise in incidence is unclear. The etiology and carcinogenesis of ICC remain inconclusive. Recent studies suggest that hepatitis B virus (HBV) infection plays an important etiological role in ICC development. HBV-associated ICC holds many clinicopathological similarities with HBV-associated hepatocellular carcinoma (HCC), and HBV-associated ICC patients may have a better prognosis than ICC patients without HBV infection. HBV-associated ICC and HBV-associated HCC may share a common disease process for carcinogenesis, through a similar long-term inflammatory carcinogenic process, and both possibly arise from hepatic progenitor cells.