IgG4-related sclerosing cholangitis: navigating diagnostic dilemmas and the challenge of relapse

Maintaining a high index of clinical suspicion for IgG4-SC is essential in patients with obstructive jaundice and biliary strictures. Future efforts should focus on validating specific biomarkers (e.g., circulating plasmablasts, autoantibody profiles) and developing evidence-based protocols for long-term management to prevent fibrotic complications and reduce the relapse rate.