• Internal medicine · Sep 2023

    Case Reports

    A Case of Focal Type 2 Autoimmune Pancreatitis Mimicking Pancreatic Cancer: Treatment with Neoadjuvant Chemotherapy and Surgery.

    • Nobuhisa Maeda, Shiroh Tanoue, Yusuke Fujino, Makoto Hinokuchi, Shiho Arima, Fumisato Sasaki, Shinichi Hashimoto, Shuji Kanmura, Michiyo Higashi, and Akio Ido.
    • Digestive and Lifestyle Diseases, Graduate School of Medical and Dental Sciences, Kagoshima University, Japan.
    • Intern. Med. 2023 Sep 1; 62 (17): 249925052499-2505.

    AbstractA 51-year-old man was referred to our hospital for the further examination of main pancreatic duct interruption. Imaging findings showed a 25-mm-diameter mass lesion located in the pancreatic head. Endoscopic ultrasonography (EUS)-guided fine-needle aspiration (FNA) was performed on the mass. Cytology suggested adenocarcinoma, but the histological diagnosis was not confirmed. We made a comprehensive diagnosis of resectable pancreatic cancer. The mass shrank after preoperative adjuvant chemotherapy, and the patient underwent surgery. The final pathological diagnosis was type 2 autoimmune pancreatitis (AIP). Two years after surgery, AIP had not recurred in the remaining pancreas.

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