Table 4. US Versus Cholangiography in Detection of General Biliary Pathologies (n = 128).
| ERC/PTC, N (%) | USN (%) | |
|---|---|---|
| Only on ERCP | 7 (5.5) | |
| Only on US a | 13 (10.1) | |
| Cholangitis | 10 (7.8) b | |
| Cholangiocellular carcinoma | 1 (0.8)c | |
| Ischemic type biliary lesions | 1 (0.8) d | |
| Complex stenosis | 1 (0.8) e | |
| Intrahepatic dilatation | 30 (23.4) | |
| Extra hepatic dilatation | 23 (18) | |
| Change of the wall | 27 (21.1) | |
| On ERCP and US | ||
| Sludge | 15 (11.1) | 7 (5.5) |
| Stone | 7 (5.5) | 3 (2.3) |
| Abscess | 4 (3.1) | 3 (2.3) |
| Stent patency | 9 (7) | 8 (6.3) |
| Pneumobilia | 10 (7.8) | 9 (7) |
| Total | 42 (100) | 22 (52) |
Abbreviations: ERCP, endoscopic retrograde cholangio-pancreatography; US, Ultrasound; ERC/PTC, endoscopic retrograde cholangio/percutaneous transhepatic cholangio-drainage.
a11 of 13 patients had no cholangiography procedure.
bThe accuracy of the diagnosis was proved by other imaging modalities as well as biochemical tests.
cThese patients had no ERC or PTC.
dThis case was missed by ERC.
eThis case was not detected by PTC due to interventional difficulties.