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. 2023 Jan 6;11(1):30–46. doi: 10.12998/wjcc.v11.i1.30

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©The Author(s) 2023. Published by Baishideng Publishing Group Inc. All rights reserved.

This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial.

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Endoscopic ultrasound appearance of autoimmune pancreatitis. A: Hypoechoic diffuse pancreatic enlargement with patchy and coarse heterogeneous parenchyma; B: Mass-like lesion (open white arrow); C: Common bile duct wall thickening (white arrow) with heterogeneous pancreatic parenchyma; D and E: Contrast-enhanced endoscopic ultrasound features of mass forming autoimmune pancreatitis showing (D) homogenous hyper-enhancement mass (white arrows) without irregular internal vessel in the arterial phase and (E) wash-out (white arrows) in the venous phase.