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KMID : 0388420020120010145
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Konkuk Journal of Medical Sciences
2002 Volume.12 No. 1 p.145 ~ p.151
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Ultraosonographic Findings in Patient of Extrahepatic Bile Duct Obstruction
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Shin Hyun-Joon
Son Eun-Ju
Lee Chang-Hee
Choi Young-Chil
Jeon Hae-Jeong
Park Jeong-Hee
Lee Tae-Ui
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Abstract
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Ultrasound is very useful in evaluation of obstructive jaundice. We. retrospectively evaluated the useful findings of ultrasonography in differentiating benign extrahepatic duct obstruction from malignant diseases.
Among the 36 patients, 25 patients were benign extrahepatic obstruction and 11 patients were malignant obstruction. The shapes of extrahepatic dilatation were classified into fustiform, meniscus, and abrupt cut off by bowel gas. The diameter, length, and bile duct wall-interface were compared between benign and malignant groups and serum bilirubin and alkaline phosphatase were also compared between two groups retrospectively. The results were as follows.
The most common form of extrahepatic dilatation was meniscus(10 of 26 patients, 38%) in benign obstruction, and fusiform(8 of 11 patiensts, 73%) in malignant obstruction. No significant difference was noted in diameter, length, serum bilirubin, and alkaline phosphatase between benign and malignant groups Only one case showed decreased bile duct wall-interface in benign obstruction, but loss or decrease of bile duct wall-interface were 8 patients in malignant obstruction.
The combined findings of fusiform dilatation and loss of bile duct wall-interface in ultrasonography will be helpful in differential diagnosis of malignant extrahepatic bile obstruction from benign conditions.
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KEYWORD
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Ultraosonography, bile ducts, obstruction
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