Prospective Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. Sep 28, 2015; 21(36): 10427-10434
Published online Sep 28, 2015. doi: 10.3748/wjg.v21.i36.10427
Table 1 Characteristics of the 71 patients according to the level of risk for common bile duct stones
Patient featuresRisk of common bile duct stones
Low (n = 21; 29%)Moderate (n = 26; 37%)High (n = 24; 34%)
Age (yr, mean ± SD)59 ± 1759 ± 1762 ± 18
Male, n (%)9 (43)12 (46)13 (54)
Bilirubin (mg/dL, mean ± SD)1.3 ± 0.52.1 ± 1.45.0 ± 1.7
AST (IU/mL, mean ± SD)201 ± 186232 ± 175237 ± 237
ALT (IU/mL, mean ± SD)169 ± 182237 ± 146302 ± 268
Alkaline phosphatase (U/L, mean ± SD)341 ± 183328 ± 192495 ± 316
GGT (IU/mL, mean ± SD)306 ± 253634 ± 167541 ± 390
Fever112
Previous cholecystectomy122
Common bile duct dilation01411
Gallstones on US132023
Gallstones on EUS in patients negative on US200
Table 2 Common bile duct stones detected on endoscopic ultrasonography, according to the predetermined level of risk n (%)
EUSResults
Low riskModerate riskHigh risk
Neg.17 (81)11 (42)12 (50)
Pos.4 (19)15 (58)12 (50)
Total212624
Table 3 Mean number and size (mm) of stone(s) in the 31 patients with common bile duct stones according to the predetermined level of risk
Risk of common bile duct stonesNumber, mean ± SDSize, mean ± SD
Low (n = 4; 19%)1.5 ± 0.63.5 ± 3.9
Moderate (n = 15; 58%)1.5 ± 0.54.2 ± 1.8
High (n = 12; 50%)1.5 ± 0.55.6 ± 2.6
Overall (n = 31; 44%)1.5 ± 0.54.6 ± 2.2