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Feature Summary:
There are two distinct subtypes of autoimmune pancreatitis (AIP).
AIP-1: AIP-1 belongs to the group of IgG4-related diseases histologically characterized by storiform cellular fibrosis, obliterative phlebitis, and periductal chronic inflammation rich in IgG4-positive plasma cells.
AIP-2: AIP-2: also known as idiopathic duct-centric pancreatitis, characterized by Ductal inflammation with intraepithelial neutrophils (so-called, granulocytic epithelial lesion), luminal neutrophilic abscesses, extensive fibrosis, but no apparent storiform or hypercellularity.
By EssentialPathology, NNMIFeature Summary:
There are two distinct subtypes of autoimmune pancreatitis (AIP).
AIP-1: AIP-1 belongs to the group of IgG4-related diseases histologically characterized by storiform cellular fibrosis, obliterative phlebitis, and periductal chronic inflammation rich in IgG4-positive plasma cells.
AIP-2: AIP-2: also known as idiopathic duct-centric pancreatitis, characterized by Ductal inflammation with intraepithelial neutrophils (so-called, granulocytic epithelial lesion), luminal neutrophilic abscesses, extensive fibrosis, but no apparent storiform or hypercellularity.