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; Akio Ido

doi:10.2169/internalmedicine.0224-22

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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, Akio Ido

著者情報

キーワード: type 2 autoimmune pancreatitis, pancreatic cancer, neoadjuvant chemotherapy

ジャーナルオープンアクセス早期公開

論文ID: 0224-22

DOI https://doi.org/10.2169/internalmedicine.0224-22

この記事には本公開記事があります。

The final version of this article is now available: Vol. 62 (2023), No. 17 pp. 2499-2505

詳細

抄録

A 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.

責任著者(Corresponding author)

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