Comparison of Efficacy of ESWL and Laser Lithotripsy in Chronic Pancreatitis With ERCP

Inclusion Criteria: * symptomatic adult patients diagnosed with chronic pancreatitis and pancreatic duct stones; * at least one stone (\>5 mm in diameter) located in the pancreatic duct of the head/body of the pancreas; * dilation of the proximal pancreatic duct. Exclusion Criteria: * history of ERCP or ESWL treatment; * suspected to have malignant tumors; * history of pancreatic surgery or gastrojejunostomy (Billroth II); * pancreatic pseudocyst with a diameter \>4cm; * bile duct stricture secondary to cholangitis or chronic pancreatitis; * acute pancreatitis exacerbation or acute exacerbation of chronic pancreatitis (including biliary pancreatitis); * coagulation dysfunction (INR≥1.5 or platelet count≤50×10\^9/L); * pregnant or breastfeeding women; * patients who refused to participate in the study.