IgG4-related Autoimmune Pancreatitis Mimicking Acute Pancreatitis: A Case Report

• Published in: Chinese medical sciences journal Vol. 32; no. 1; pp. 65 - 68
• Main Authors: Chen, Xing, Wang, Lihua, Zhang, Lixian, Zhao, Caihong
• Format: Journal Article
• Language: English
• Published: China Elsevier B.V 10.04.2017; Department of Urology, China-Japan Friendship Hospital, Beijing 100029, China%Department of Gastroenterology, Harrison International Peace Hospital, Hengshui 053000, China
• Subjects: autoimmune; Autoimmune Diseases - diagnostic imaging; Autoimmune Diseases - immunology; autoimmune pancreatitis; computed; computed tomography; diseases; Female; Humans; IgG4-related; IgG4-related diseases; Immunoglobulin G - immunology; Middle Aged; Pancreatic Neoplasms - diagnostic imaging; Pancreatic Neoplasms - immunology; pancreatitis; Pancreatitis - diagnostic imaging; Pancreatitis - immunology; tomography; Tomography, X-Ray Computed; computed tomography; autoimmune pancreatitis; IgG4-related diseases
• ISSN: 1001-9294
• DOI: 10.24920/J1001-9242.2007.009

IGG4-RELATED autoimmune pancreatitis (AIP) is themost common type of IgG4-related diseases. Theobservation of a diffused and localized enlargementof the pancreas and strictures in the main pancreaticduct on radiological imaging is essential fordiagnosing AIP. The clinical features of AIP which presentas a localized pancreatic mass greatly mimic pancreaticcancer. Cases with AIP mimicking pancreatic cancer arereported numerously. However, cases of IgG4-related AIPmanifesting acute pancreatitis symptoms and extensiveperipancreatic effusion are rarely observed. Meanwhile,acute pancreatitis is a common disease. If misdiagnosed asacute pancreatitis, IgG4-related AIP may progressseriously. Here, we report a rare case of IgG4-related AIPsuspected of acute pancreatitis because of epigastric painand extensive peripancreatic effusion on computed tomography(CT) images.