[Novel Insights of Primary Sclerosing Cholangitis and Primary Biliary Cholangitis]

Dong-Won Ahn
Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi 2020 May 25, 75 (5): 246-256
Primary sclerosing cholangitis (PSC) and primary biliary cholangitis (PBC) are immune-mediated chronic liver diseases. PSC is a rare disorder characterized by multi-focal bile duct strictures and progressive liver diseases that ultimately results in the need for liver transplantation in most patients. Imaging studies, such as MRCP, have an essential role in the diagnosis of most cases of PSC. PSC is usually accompanied by inflammatory bowel disease, and there is a high risk of cholangiocarcinoma and colorectal cancer in PSC. No medical therapies have been proven to delay the progression of PSC. Endoscopic intervention for tissue diagnosis or biliary drainage is frequently required in cases of PSC with a dominant stricture, acute cholangitis, or clinically suspected cholangiocarcinoma. PBC is a chronic inflammatory autoimmune cholestatic liver disease, which, when untreated, will culminate in end-stage biliary cirrhosis requiring liver transplantation. A diagnosis is usually based on the presence of serum liver tests indicative of cholestatic hepatitis in association with circulating antimitochondrial antibodies. Patient presentation and course can be diverse in PBC, and risk stratification is important for ensuring that all patients receive a personalized approach to their care. Medical therapy using ursodeoxycholic acid or obeticholic acid has an important role in reducing the progression to end-stage liver disease in PBC.

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