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Table 1 Comparison of type 1 and type 2 autoimmune pancreatitis (AIP).

From: Type 1 autoimmune pancreatitis

  Type 1AIP Type 2 AIP
Age Adult Child and adult
Gender Predominantly male Almost equal
Serum IgG4 levels Elevated Normal
   Histological nomenclature Lymphoplasmacytic sclerosing pancreatitis (LPSP) Idiopathic duct-centric pancreatitis
   IgG4+ plasma cells Many Rare
   Granulocytic epithelial lesion Absent Present
Relapse rate High Low
Extra-pancreatic lesions IgG4-related disease as shown in Table 2 Inflammatory bowel disease