Biliary tract calculi in primary sclerosing cholangitis

Area of Science:

• Hepatology and Gastroenterology
• Biliary Tract Diseases
• Autoimmune Liver Diseases

Background:

• Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease.
• Conventional diagnostic criteria often exclude PSC if biliary tract calculi are present.
• The relationship between PSC and biliary calculi requires further investigation.

Purpose of the Study:

• To compare clinical and cholangiographic features of patients with sclerosing cholangitis with and without biliary tract calculi.
• To evaluate the role of biliary calculi in the diagnostic criteria for PSC.

Main Methods:

• Retrospective review of 85 patients diagnosed with sclerosing cholangitis between August 1991 and September 1993.
• Group A: 63 patients with sclerosing cholangitis alone.
• Group B: 22 patients with sclerosing cholangitis and biliary tract calculi.
• Comparison of clinical features (age, sex, inflammatory bowel disease, presentation) and cholangiographic findings (stricture site and extent).
• Review of endoscopic stone extraction success and complications.

Main Results:

• Patients with and without calculi shared similar mean age, prevalence of inflammatory bowel disease, and extent of bile duct strictures.
• Group B (with calculi) had a higher proportion of women and more frequent symptomatic presentations, including cholangitis.
• In 77.3% of Group B patients, calculi developed after PSC diagnosis; endoscopic stone extraction was successful in 86.6% of choledocholithiasis cases.

Conclusions:

• Biliary tract calculi appear to be a component of the primary sclerosing cholangitis spectrum.
• The presence of calculi should not preclude a diagnosis of primary sclerosing cholangitis.
• Further research is warranted to understand the implications of calculi in PSC.