• Nanping Wang, Peng Zhu, Yue Xiang, Liping Tao, Tao Huang, and Zhisong Feng.
• Department of Gastroenterology, Affiliated Hospital of North Sichuan Medical College, Nanchong City, Sichuan Province, China.
• Medicine (Baltimore). 2024 Apr 26; 103 (17): e37922e37922.

RationaleImmunoglobulin G4-related disease (IgG4-RD) can involve various organs throughout the body, primarily manifesting as endocrine dysfunction, visual impairment, jaundice, and limited sexual function. IgG4-related autoimmune pancreatitis is triggered by autoimmune reactions and characterized by structural changes in the pancreas and pancreatic ducts. The disease mainly affects middle-aged and elderly males, typically presenting as progressive painless jaundice and misdiagnosed as cholangiocarcinoma or pancreatic cancer.Patient ConcernsThis study reports a 54-year-old male who consulted with different institutions multiple times due to diabetes, pancreatitis, elevated liver enzymes, and jaundice.DiagnosesMagnetic resonance imaging revealed swollen head of the pancreas and atrophic tail. Liver and pancreatic tissue pathology showed IgG4 plasma cell infiltration, while liver biopsy indicated interface hepatitis, liver fibrosis, and pseudolobule formation, with no evidence of bile duct damage.InterventionsFollowing hormone therapy, the patient's serum IgG4 levels and liver enzyme levels returned to normal.OutcomesThe disease relapsed 2 years after maintaining hormone therapy, and the patient underwent additional hormone-induced remission therapy combined with azathioprine.LessonsThe purpose of this research report is to enhance the awareness and understanding of IgG4-RD, emphasizing the necessity for personalized treatment strategies that take into account its recurrence, associations, and imaging features. This report provides valuable insights and guidance for clinicians in managing and diagnosing patients with IgG4-RD.Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.

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