Shimizu Shuya, Naitoh Itaru, Nakazawa Takahiro, Hayashi Kazuki, Okumura Fumihiro, Miyabe Katsuyuki, Kondo Hiromu, Yoshida Michihiro, Yamashita Hiroaki, Ohara Hirotaka, Joh Takashi
Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, Japan.
Intern Med. 2012;51(16):2135-40. doi: 10.2169/internalmedicine.51.7992. Epub 2012 Aug 15.
Autoimmune pancreatitis (AIP) is characterized by irregular narrowing of the main pancreatic duct (MPD), and narrowing of the MPD is an essential criterion for the diagnosis of focal/segmental AIP according to the Japanese diagnostic criteria 2011. We report a 55-year-old man in whom magnetic resonance imaging showed two masses in the pancreatic head and tail and whose pancreatogram was normal at first. However, the two masses changed into diffuse swelling of the pancreas, and diffuse narrowing of the MPD appeared after the cessation of steroid therapy. Finally, we could diagnose this patient as having AIP according to the Japanese diagnostic criteria.
自身免疫性胰腺炎（AIP）的特征是主胰管（MPD）不规则狭窄，根据2011年日本诊断标准，MPD狭窄是诊断局灶性/节段性AIP的必要标准。我们报告一例55岁男性，磁共振成像显示胰头和胰尾有两个肿块，最初胰管造影正常。然而，这两个肿块转变为胰腺弥漫性肿胀，停用类固醇治疗后出现MPD弥漫性狭窄。最后，根据日本诊断标准，我们诊断该患者患有AIP。
