Autoimmune Pancreatitis (AIP) Type 1 and Type 2

Objectives: To develop and validate histologic diagnostic criteria for autoimmune pancreatitis (AIP) and its types. Methods: Thirteen pathologists participated in this 2-phase study to develop diagnostic criteria for AIP types 1 and 2 (phase 1) and validate them (phase 2). A virtual library of 40 resected pancreata with AIP and other forms of chronic pancreatitis (CP) was constructed. Readers reviewed the slides online and filled out a...