Abstract
A 65-year-old man with ulcerative colitis presented with aggravated diabetes. Computed tomography showed two masses in the body and tail of the pancreas. Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) was performed, with histopathological findings suggesting autoimmune pancreatitis (AIP). Type-2 AIP was suspected, and administration of prednisolone was initiated. The pancreatic masses had disappeared after the treatment. In this case, EUS-FNA was effective for the diagnosis of type-2 AIP. The two-lesion mass formation observed here is a rare presentation of the disease. In patients with a history of ulcerative colitis, the possibility of late-onset type-2 AIP should be kept in mind.
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YM diagnosed, treated this case, and drafted this article. AS, KO, MN, SH, SK, YY, KI, and ES treated this case. SS supervised the process of drafting this article.
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Yoshihide Matsumoto, Akiko Shimizu, Kento Ogawa, Masaharu Nakamura, Shinya Hoki, Shigenobu Kuroki, Yasumichi Yano, Kozo Ikuta, Eri Senda and Seiji Shio declare that they have no conflict of interest.
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Matsumoto, Y., Shimizu, A., Ogawa, K. et al. Late-onset type-2 autoimmune pancreatitis with two mass lesions diagnosed by endoscopic ultrasound-guided fine-needle aspiration. Clin J Gastroenterol 14, 899–904 (2021). https://doi.org/10.1007/s12328-021-01364-z
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DOI: https://doi.org/10.1007/s12328-021-01364-z