Clinicopathological Features of Type 2 Autoimmune Pancreatitis in Japan

The aim of the study was to clarify clinicopathological features of type 2 autoimmune pancreatitis (AIP) in Japan; a multicenter survey was carried out.The first screening collected patients with pancreatitis whose pancreatic tissue samples were available and who fulfilled at least 1 of the following 3 criteria as possible type 2 AIP: (1) histological presence of granulocytic epithelial lesion, (2) age of 50 years or younger, and (3) association...