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Case Report
Copyright: ©Author(s) 2026.
World J Gastrointest Endosc. Apr 16, 2026; 18(4): 118485
Published online Apr 16, 2026. doi: 10.4253/wjge.v18.i4.118485
Figure 8
Figure 8 Classification of immunoglobulin G4-related sclerosing cholangitis biliary strictures[9]. Type 1 stricture confined to the intrapancreatic bile duct. Type 2 diffuse strictures involve both intrahepatic and extrahepatic bile ducts. Subtype 2a: Intrahepatic duct strictures with prestenotic dilation. Subtype 2b: Intrahepatic duct strictures without prestenotic dilation and with decreased biliary arborization. Type 3 combined strictures of the hilar bile ducts and the intrapancreatic bile duct. Type 4 isolated strictures of the hilar bile ducts. Arrow(s) indicate the location of the bile duct strictures. Citation: Naitoh I, Nakazawa T. Classification and Diagnostic Criteria for IgG4-Related Sclerosing Cholangitis. Gut Liver 2022; 16: 28-36. Copyright© Gut and Liver. This is an open-access article (Supplementary material).


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