EUS findings Estimated histological findings Hyperechoic fosi Focal fibrosis Hyperechoic strand Bridging fibrosis Lobularity Interlobular fibrosis Cyst Cyst Stone Calcified stones Ductal dilatation Dilated main pancreatic duct Visible side brunch Side brunch dilatation Duct irregularity Forcal dilatation/narrowing Hyperechoic ductal margins Periductal fibrosis

Table 4: EUS criteria for diagnosis of chronic pancreatitis and its estimated histological findings.