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delayed immune-related sclerosing cholangitis after discontinuation of pembrolizumab:A case report

World Journal of Gastroenterology 2022年第28期28卷 3732-3738页

作者： Takeshi Tanaka Arata Sakai Masahiro Tsujimae Yasutaka Yamada Takashi Kobayashi Atsuhiro Masuda Yuzo Kodama Division of Gastroenterology Department of Internal MedicineKobe University Graduate School of MedicineKobe 650-0017HyogoJapan

BACKGROUND Secondary sclerosing cholangitis,characterized by biliary obstruction,can be caused by drugs such as immune checkpoint inhibitors(ICIs).While there a few reports of sclerosing cholangitis after immune checkpoint inhibitor administration,no case has been reported after discontinuation of such drugs.CASE SUMMARY A 68-year-old man who underwent chemotherapy for lung adenocarcinoma with bone metastasis presented with abdominal pain and fever 4 mo after the final administration of pembrolizumab.Computed tomography revealed thickening of the gallbladder wall and dilatation of the common bile duct.Endoscopic retrograde cholangiopancreatography revealed an irregularly narrowed intrahepatic bile duct.Biopsy of the bile duct demonstrated that CD8+T cells were predominant over CD4+T cells.Liver biopsy showed dominant infiltration of CD8+T in the portal tract,but onion-skin lesions were not observed.The patient was diagnosed with immune-related sclerosing cholangitis induced by pembrolizumab.Administration of methylprednisolone and endoscopic nasobiliary drainage were performed,but the cholangiography and laboratory test findings did not improve.No further treatment was administered due to disease progression,and the patient was referred for palliative care.CONCLUSION Immune-related sclerosing cholangitis may have a late onset,and such cases occurring after discontinuation of ICIs should be carefully managed.

关键词： Immune-related adverse events Sclerosing cholangitis delayed immunerelated events Case report

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