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  • Title: IgG4-related Sclerosing Cholangitis Mimicking Cholangiocarcinoma Diagnosed by Endoscopic Ultrasound-guided Fine-needle Aspiration.
    Author: Matsumoto R, Miura S, Kanno A, Ikeda M, Sano T, Tanaka Y, Nabeshima T, Hongou S, Takikawa T, Hamada S, Kume K, Kikuta K, Masamune A.
    Journal: Intern Med; 2020 Apr 01; 59(7):945-950. PubMed ID: 31875638.
    Abstract:
    A 58-year-old man was referred for obstructive jaundice. Imaging modalities revealed the presence of multiple pancreatic tumors and the stenosis of the middle common bile duct due to a hypoenhanced localized tumor. The multiple pancreatic tumors were histopathologically diagnosed as autoimmune pancreatitis by endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA). To differentiate between IgG4-related sclerosing cholangitis (IgG4-SC) and cholangiocarcinoma, we diagnosed the biliary tumor as IgG4-SC by EUS-FNA because of insufficient pathological materials obtained in a transpapillary manner. We herein report a case of IgG4-SC diagnosed by EUS-FNA.
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