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Late-onset type-2 autoimmune pancreatitis with two mass lesions diagnosed by endoscopic ultrasound-guided fine-needle
Yoshihide Matsumoto1, Akiko Shimizu2, Kento Ogawa2
1Division of Gastroenterology, Shinko Hospital, 1-4-47 Wakihama-cho, Chuo-ku, Kobe-shi, Hyogo, 561-0072, Japan. matkyoto@kuhp.kyoto-u.ac.jp.
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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