Morphology on intraductal ultrasonography (IDUS) findings and final diagnosis
| *Final diagnosis | ||||
|---|---|---|---|---|
| Malignant | ||||
| Morphology on IDUS | Biopsy positive | Biopsy negative | Benign | Total |
| aTwo with bile duct stone, one with post out mobile injury, one with chronic pancreatitis, one with primary sclerosing cholangitis, and one with Mirizzi's syndrome; btwo with bile duct thrombi by hepatocellular carcinoma; csix with pancreatic cancer, two with peripheral cholangiocarcinoma, and one with gall bladder cancer; and done with tumour forming pancreatitis. | ||||
| *The process of final diagnosis is shown in table 4. | ||||
| Without sessile tumour | ||||
| No apparent lesion | 0 | 0 | 2 | 2 |
| Localised wall thickening | 1 | 1 | 6a | 8 |
| Polypoid lesion | 8 | 2b | 9 | 19 |
| Sessile tumour | ||||
| Intraductal sessile tumour | 12 | 1 | 0 | 13 |
| Sessile tumour outside of the bile duct | 10 | 9c | 1d | 20 |
| Total | 31 | 13 | 18 | 62 |