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Letter
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We thank Hirano et al for evincing interest in our study and giving us an opportunity to clarify some specific issues regarding the subtypes of autoimmune pancreatitis (AIP).
We agree with Hirano and colleagues that lymphoplasmacytic sclerosing pancreatitis (LPSP) and idiopathic duct-centric chronic pancreatitis (IDCP) show some differences in their clinical and histological patterns.1 As compared to patients with IDCP, patients with LPSP are older, have elevated serum IgG4 levels and a strong association with sclerosing cholangitis, sialadenitis, and …
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Competing interests: None.