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Case Reports
. 2016 Jul;35(4):315-8.
doi: 10.1007/s12664-016-0672-x. Epub 2016 Jul 21.

IgG4-associated Sclerosing Cholangitis Masquerading as Hilar Cholangiocarcinoma

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Case Reports

IgG4-associated Sclerosing Cholangitis Masquerading as Hilar Cholangiocarcinoma

Kamal Sunder Yadav et al. Indian J Gastroenterol. .

Abstract

IgG4-sclerosing cholangitis (IgG4-SC) commonly presents with type 1 autoimmune pancreatitis. Isolated IgG4-SC is rare. Differentiating IgG4-SC from cholangiocarcinoma preoperatively is challenging due to overlapping radio-clinical manifestations and difficult preoperative histology. We present three cases preoperatively diagnosed and surgically treated as hilar cholangiocarcinoma. First and second cases presented with cholangiocarcinoma with portal vein involvement and third with a malignant-appearing hilar stricture. On histopathology, IgG4-SC was diagnosed in the first two cases. Third patient had raised serum IgG4, and histopathology was inconclusive for IgG4-SC and negative for malignancy. However, she responded to steroid therapy.

Keywords: Cholangiocarcinoma; IgG4; Sclerosing cholangitis.

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