How is pathology histology of chronic pancreatitis?

Early : induration , Nodular scarring , Lobular fibrosis Then : Loss of normal lobulation , Thicker fibrosis Then : reduce in acinar cell mass , Ductal dilatation , Ductular epithelium dysplasia , monoNu. Cell infiltrat. Cystic change Severe Chronic Pancreatitis : Replacement of acinar tissue by Fibrosis , islet size &number reduced