Table 4:
Endoscopic retrograde cholangiopancreatography findings.
Group A
Group B
value
Diameter of the common bile duct
9.7 ± 2.1
13.0 ± 4.7
0.043
Morphology of the bile duct
0.061
Normal or mild irregularity
3
5
Unilateral narrowing
5
12
Bilateral narrowing
1
20