Research Article

Endoscopic Management of the Difficult Bile Duct Stones: A Single Tertiary Center Experience

Table 1

Main differences between patients with easy and difficult stones.

VariableEasy stone (n: 1321)Difficult stone (n: 208)p value

Age (year)62.9 ± 1766 ± 16.90.015
Gender: women/men; n (%)811 (61.4)/510 (38.6)136 (65.4)/72 (34.6)0.267
Laboratory findings
 Glucose (mg/dL)115 ± 45.1115.6 ± 60.30.915
 ALT (U/L)80 (5−2665)48 (1−643)<0.001
 AST (U/L)59 (2−1851)47 (10−607)0.004
 GGT (U/L)278 (6−2400)215 (4−5811)0.016
 ALP(U/L)183 (9−2069)200 (16−2105)0.418
 Amylase (mg/dL)208 ± 551114.4 ± 158.90.954
 Total bilirubin (mg/dL)5.3 ± 4.589.6 ± 11.80.006
Endoscopic/radiological findings; n (%)
 Cholecystectomized patients318 (%25.6)78 (41.9)<0.001
 Papilla in bulbus16 (1.2)7 (3.5)0.025
 Papilla in 3rd portion11 (0.8)7 (3.5)0.006
 Periampullary diverticula236 (17.9)29 (13.9)0.063
 History of gastric operation14 (1.1)4 (1.9)0.100
 Impacted stone2 (0.15)18 (8.6)<0.001
 Stricture distal to the stone3 (0.22)40 (13.6)<0.001
Number of patients with dilated CBD; n (%)743 (70.4)114 (94.2)<0.001

Values are presented as number (%), mean ± SD, or median (range).
ALT: alanine aminotransferase; AST: aspartate aminotransferase; CBD: common bile duct; GGT: gamma glutamyl transferase; ALP: alkaline phosphatase.