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Two cases of liver damage of ir-AE induced by PD-L1 inhibitors with diffuse bile duct dilatation Shogo Hino 1 1Department of Radiology Kyushu Central Hospital Keyword: PD-L1 , 免疫チェックポイント阻害薬 , irAE , 肝臓 pp.671-675
Published Date 2020/7/10
DOI https://doi.org/10.18888/rp.0000001291
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Case1:A 83-year-old man with lung cancer was treated with atezolizumab. After 4 months, he complained general malaise. A blood examination revealed elevation of liver enzyme. Abdominal CT and MRCP revealed diffuse bile duct dilatation without any obstruction.

Case2:A 43-year-old man with lung cancer was treated with durvalumab. After 2 weeks, he complained epigastric pain. A blood examination revealed elevation of liver enzyme. Abdominal CT revealed diffuse bile duct dilatation without any obstruction.

There are few previous reports that ir-AE by PD-1 inhibitor showed bile duct dilatation without obstruction on image examination. We reported similar image features in those two patients. This may be characteristic image feature of ir-AE.


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