Fig. 5From: Isolated IgG4-related sclerosing cholangitis misdiagnosed as malignancy in an area with endemic cholangiocarcinoma: a case reportLeft hepatic duct along with common bile duct showing positive plasma cells. a. IHC x400 of IgG-positive plasma cells. b. IHC x400 of IgG4-positive plasma cells (80 cells/HPF) IHC, immunohistochemistryBack to article page