Immunoglobulin G4-related sclerosing cholangitis: A case report

Figure 5 Histopathology and cytopathology. A and B: Sections of the common bile duct extending to the hepatic bifurcation show minimal fibrosis with chronic inflammatory cell infiltration (A: Hematoxylin and eosin staining, magnification × 40; B: Hematoxylin and eosin staining, magnification × 100); C and D: Bile duct brushings reveal epithelial cells with focal nuclear enlargement, an increased nuclear-to-cytoplasmic ratio, coarse hyperchromatic chromatin, and mild atypia. Correlation with clinical, radiologic, and histologic data is recommended (Wright-Giemsa staining, magnification × 1000).