Maximum tumour size on intraductal ultrasonography (IDUS) findings and final diagnosis
| *Final diagnosis | |||
|---|---|---|---|
| Maximum tumour size on IDUS | Malignant | Benign | Total |
| aOne with inflammatory polyp, one with polypoid lesion located at the distal end of the bile duct, and one with tumour forming pancreatitis. | |||
| *The process of final diagnosis is shown in table 4. | |||
| Maximum tumour diameter or maximum wall thickening | |||
| <10.0 mm | 7 | 15 | 22 |
| ≥10.0 mm | 37 | 3a | 40 |