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Intraductal ultrasonography and endoscopic retrograde cholangiography in diagnosis of extrahepatic bile duct stones: a comparative study |
En-Qiang Linghu, Liu-Fang Cheng, Xiang-Dong Wang, Zhi-Qiang Wang, Yun-Sheng Yang, Wen Li, Feng-Chun Cai, Hong-Zhi Wang, Hong Du and Jiang-Yun Meng |
Beijing, China
Author Affiliations: Department of Digestive Medicine, 301 Hospital, Beijing 100853, China (Linghu EQ, Cheng LF, Wang XD, Wang ZQ, Yang YS, Li W, Cai FC, Wang HZ, Du H and Meng JY)
Corresponding Author: En-Qiang Linghu, MD, Department of Digestive Medicine, 301 Hospital, Beijing 100853, China (Tel: 86-10-66937485; Fax: 86-10-68154653; Email: lh_eq@hotmail.com) |
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Abstract BACKGROUND: Intraductal ultrasonography (IDUS) is highly accurate in detection of extrahepatic bile duct stones. This study was to compare the accuracy of IDUS and endoscopic retrograde cholangiography (ERC) in the diagnosis of extrahepatic bile duct stones.
METHODS: Thirty patients suspected of extrahepatic bile duct stones on B ultrasonography, CT, or MRI were enrolled for study. ERC was performed using a Fujinon duodenoscope (ED-410XT, ED-410Xu), then IDUS was done by inserting a Fujinon microprobe (PL2220-15) through the endoscopic biopsy channel to detect the extrahepatic bile duct. Finally stones in the extrahepatic bile duct were detected and extracted by endoscopic sphincterotomy (EST).
RESULTS: Among the 30 patients, 26 were diagnosed as having cholelithiasis accurately through ERC. In one patient the stone detected by ERC was really floccule. Misdiagnosis happened in 2 patients with extrahepatic bile duct stones. So the overall accuracy and sensitivity of ERC in the diagnosis of extrahepatic bile duct stones were 86.7% (26/30) and 92.9% (26/28) respectively. In contrast, IDUS showed the results of diagnosis were in consistent with those of EST stone extraction. Its accuracy and sensitivity in the diagnosis of extrahepatic bile duct stones were 100% (30/30) and 100% (28/28) respectively.
CONCLUSION: IDUS which is superior to ERC in diagnosing extrahepatic bile duct stones can avoid the visual error of ERC.
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Cite this article: |
Linghu EQ,
Cheng LF,
Wang XD,
et al.
Intraductal ultrasonography and endoscopic retrograde cholangiography in diagnosis of extrahepatic bile duct stones: a comparative study.
Hepatobiliary Pancreat Dis Int
2004;
3(1):
129-132. DOI:
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URL: |
http://dx.doi.org/ OR http://www.hbpdint.com/EN/Y2004/V3/I1/129 |
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