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[Intrahepatic cholangitis with presumably immunologic bases]

O Klinge1

  • 1Institut für Pathologie, Städtische Kliniken Kassel.

Verhandlungen Der Deutschen Gesellschaft Fur Pathologie
|January 1, 1995
PubMed
Summary

This overview discusses chronic cholangitides, including primary biliary cirrhosis and primary sclerosing cholangitis. Future research needs to clarify immunocholangitis, though immunohistochemistry suggests immune involvement in pathogenesis.

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Area of Science:

  • Gastroenterology and Hepatology
  • Immunology
  • Pathology

Background:

  • Chronic cholangitides encompass several conditions, including primary biliary cirrhosis (PBC), immunocholangitis, and primary sclerosing cholangitis (PSC).
  • These conditions can progress to PBC over extended periods.
  • Histological patterns are established for PBC and PSC, but immunocholangitis requires further definition.

Purpose of the Study:

  • To provide an overview of three types of chronic cholangitides.
  • To highlight the current understanding and future research needs for immunocholangitis.
  • To discuss the pathogenesis and histological features of these biliary diseases.

Main Methods:

  • Review of existing literature on chronic cholangitides.
  • Analysis of histological patterns in defined conditions.
  • Examination of immunohistochemical, electron microscopic, and histochemical studies.

Main Results:

  • Histological patterns are well-defined for chronic non-destructive cholangitis (PBC) and PSC.
  • Immunocholangitis requires further clinical, laboratory, and histological evaluation.
  • Immunohistochemical studies provide evidence for immune-related pathogenesis.
  • Vascular lesions and basement membrane changes appear to have minor roles in bile duct destruction and fibrosis.
  • Ductal neoformation results from hepatocellular metaplasia, preceding fibrosis.

Conclusions:

  • Chronic cholangitides share potential pathways, with PBC as a common endpoint.
  • Immunocholangitis pathogenesis needs more precise elucidation, despite evidence of immune involvement.
  • Hepatocellular metaplasia plays a key role in ductal regeneration and subsequent fibrosis in sclerosing cholangitis.

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