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Endoscopic retrograde cholangiopancreatography findings.
| Group A | Group B | P value | |
|---|---|---|---|
| n = 9 | n = 37 | ||
| 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 |
