Cholestatic symptoms in long-standing UC

What is known

• PSC is a cholestatic condition with a long-standing, progressive course, and about 80% of PSC cases are accompanied by inflammatory bowel disease. ¹
• PSC occurs in 2–10% of patients with ulcerative colitis; abnormal liver function tests in UC should prompt investigation for PSC, most often diagnosed by cholangiography. ²
• PSC is the most common and most specific hepatobiliary manifestation among UC patients, though other cholestatic diseases occur. ^3,4

What is unknown / caveats

• Primary biliary cholangitis (PBC), while rare, can also cause cholestatic enzyme elevation in long-standing UC and is distinguished by antimitochondrial antibodies and exclusion of other causes ^3,4
• The excerpts describe associations and case reports rather than a diagnostic algorithm for the individual patient
• Other hepatobiliary disorders, including primary biliary cholangitis, can present with cholestasis in UC, so a diagnosis rests on appropriate imaging and laboratory work-up.

References

1. Pardak P, Walczak E, Filip RS. Rapid progression of primary sclerosing cholangitis complicated with ulcerative colitis. Case Rep Gastrointest Med. 2015. PMID: 25694833.

2. Noack KB, Speer T. Investigation of the patient with abnormal liver function tests. Baillieres Clin Gastroenterol. 1997. PMID: 9192062.

3. Polychronopoulou E, Lygoura V, Gatselis NK, Dalekos GN. Increased cholestatic enzymes in two patients with long-term history of ulcerative colitis: consider primary biliary cholangitis not always primary sclerosing cholangitis. BMJ Case Rep. 2017. PMID: 28951510.

4. Lever E, Balasubramanian K, Condon S, Wat BY. Primary biliary cirrhosis associated with ulcerative colitis. Am J Gastroenterol. 1993. PMID: 8503394.

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Draft, generated by the IBDology RAG and not yet clinician-reviewed. Answers are grounded in the retrieved literature listed above; a high faithfulness score means the answer matches its sources, not that the sources are correct.