[IgG4-associated sclerosing cholangitis mimicking cholangiocellular carcinoma].

The paper presents an update on the epidemiology, main clinical manifestations, and diagnostic methods in IgG4-associated sclerosing cholangitis. It highlights the importance of morphological and immunohistochemical studies in the diagnosis of the disease. It describes a case of diagnosing IgG4-associated sclerosing cholangitis when examining the surgical material from a patient with suspected cholangiocellular carcinoma of the hepatic hilus.