Table 4.

Accuracy of diagnosis of obstructive causes (%)

	B-US	CT	ERCP/PTC	MRCP	MRCP+MRI
Cholelithiasis
Gallbladder stone	71.4	75.0	80.0	78.5	92.9
Intrahepatic bile duct stone	85.7	100.0	100.0	71.4	85.7
Choledocholithiasis	52.9	63.6	87.5	88.2	94.1
Pancreato-biliary tumor
Gallbladder carcinoma	50.0	75.0	60.0	50.0	66.7
Cholangiocarcinoma	33.3	75.0	83.3	77.8	88.9
Ampullary carcinoma	33.3	50.0	100.0	66.7	66.7
Pancreatic head carcinoma	63.6	81.8	100.0	90.9	100.0
Bile papilla carcinoma	40.0	66.7	100.0	60.0	80.0
Other diseases
Bile duct injury	50.0		100.0	100.0	100.0
Choledochal cyst	100.0	100.0	100.0	100.0	100.0
Sclerosing cholangitis	0	50.0	0	0	50.0
Chronic pancreatitis	75.0	75.0	100.0	50.0	75.0
Total	57.3	73.7	85.0	75.6	87.8