Clinical Research
Copyright ©The Author(s) 2003.
World J Gastroenterol. Dec 15, 2003; 9(12): 2824-2827
Published online Dec 15, 2003. doi: 10.3748/wjg.v9.i12.2824
Table 1 Pancreato-biliary diseases (n = 82)
Pancreato-biliary diseasesNo. of cases
Cholelithiasisa38
Gallbladder stone14
Intrahepatic bile duct stone7
Choledocholithiasis17
Pancreato-biliary tumorb34
Gallbladder carcinoma6
Cholangiocarcinoma9
Ampullary carcinoma3
Pancreatic head carcinoma11
Bile papilla carcinoma5
Other diseases10
Bile duct injury2
Choledochal cyst2
Sclerosing cholangitis2
Chronic pancreatitis4
Table 2 Accuracy of pancreato-biliary obstruction level (%) by different imageological methods
LevelIntra-hepaticExtra-hepaticMain pancreaticTotal
B-US100.0 (8/8)81.7 (49/60)90.5 (19/21)85.4 (76/89)
CT100.0 (4/4)93.0 (40/43)100.0 (19/19)95.5 (63/66)
ERCP/PTC100.0 (5/5)96.7 (29/30)100.0 (8/8)97.7 (42/43)
MRCP100.0 (8/8)100.0 (60/60)100.0 (21/21)100.0 (89/89)
Table 3 ROC analysis of pancreato-biliary obstruction
ERCP/PTC (n = 40)MRCP (n = 82)MRCP + MRI (n = 82)
True-positive142228
True-negative193945
False-positive393
False-negative4126
Sensitivity (%)77.864.782.3
Specificity (%)86.481.293.8
Accuracy (%)82.574.489.0
AZ Values ± SD0.9281 ± 0.04550.8833 ± 0.04000.9687 ± 0.0168
Table 4 Accuracy of diagnosis of obstructive causes (%)
B-USCTERCP/PTCMRCPMRCP+MRI
Cholelithiasis
Gallbladder stone71.475.080.078.592.9
Intrahepatic bile duct stone85.7100.0100.071.485.7
Choledocholithiasis52.963.687.588.294.1
Pancreato-biliary tumor
Gallbladder carcinoma50.075.060.050.066.7
Cholangiocarcinoma33.375.083.377.888.9
Ampullary carcinoma33.350.0100.066.766.7
Pancreatic head carcinoma63.681.8100.090.9100.0
Bile papilla carcinoma40.066.7100.060.080.0
Other diseases
Bile duct injury50.0100.0100.0100.0
Choledochal cyst100.0100.0100.0100.0100.0
Sclerosing cholangitis050.00050.0
Chronic pancreatitis75.075.0100.050.075.0
Total57.373.785.075.687.8