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Pembrolizumab-Induced Secondary Cholangitis: A Case Report
Nur Aisyah Muhd Opandi1, Aqeel Ahmed1, Emma Robinson1
1Internal Medicine, Chesterfield Royal Hospital NHS Foundation Trust, Chesterfield, GBR.
Cureus
|December 8, 2025
Summary
Immune checkpoint inhibitors (ICIs) can cause rare immune-related cholangitis, a serious bile duct inflammation. Early diagnosis and immunosuppressive treatment are crucial for managing this adverse event in cancer patients.
Area of Science:
- Oncology
- Immunology
- Hepatology
Background:
- Immune checkpoint inhibitors (ICIs) are vital cancer therapies but can cause immune-related adverse events (IrAEs).
- While immune-related hepatitis is recognized, immune-related cholangitis (bile duct inflammation) is rarer and less understood.
- Immune-related cholangitis can lead to severe outcomes, including liver failure and death.

