Table 1 Details regarding ERCP for biliary duct disease

Congenital biliary dilatation 　(median age: 3.9 year-old [ 0.4–14.7 ])

Preoperative treatment

  Endoscopic biliary stent

32

  Removal of protein plug in the common channel

2

  Failure to insert stent (converted to percutaneous transhepatic biliary drainage)

4 (2)

Intraoperative treatment

  EPS for intraoperative pancreatic duct injury

1

  Pancreatography after pancreatic duct injury repair

1

Postoperative treatment

  EPS for intraoperative pancreatic duct injury

1

  Removal of protein plug from the pancreatic duct

1

Choledocholithiasis　(median age: 6.6 years [ 0.3–10.2 ])

  Endoscopic removal of stones by papillary balloon dilatation

9

Common bile duct stenosis (age: 11.3 years)

  Endoscopic balloon dilatation of common bile duct

1