Table 1.

Characteristics and diagnosis of the patients

Parameters	Results
No. of patients (n)	1291
Mean age (yr, range)	64 (12-96)
Male:female	738:553
Pancreatic duct opacification	875 (68%)
Difficult bile duct cannulation	107 (8%)
Intraductal ultrasonography	266 (20)
Biliary sphincterotomy	270 (20%)
Biliary stent placement	60 (112%)
Papillary balloon dilatation	50 (3.8%)
Cytology of the bile/pancreatic juice	53 (4.1%)
Biopsy of the bile/pancreatic duct	78 (6.0%)
Gallbladder stone	488 (38%)
Choledocholithiasis	313 (24%)
Cholangiocarcinoma	75 (6%)
Pancreatic cancer	73 (6%)
Intraductal papillary mucinous neoplasm	63 (4%)
Ampullary cancer	23 (2%)
Pancreaticobiliary maljunction	20 (2%)