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Journal of Korean Society of Medical Ultrasound 1987;6(1): 1-6.
Sonographic Finding of Intrahepatic Stone: Correlation With Choloangiography
Byung Ihn Choi, Woo Ho Cho, Jae Hyung Park, and Chu Kim
Department of radiology, College of Medicine, Seoul National University
ABSTRACT
40 cases of intrahepatic calculi were studied by both sonography and cholangiography in Seoul National University Hospital over a period of two years. The patients, whose ages ranged from 21to 65 years, consisted of 14 men and 26 womed. Sonograms of intrahepatic calculi were classified into the following three types;type I (shadow echo within dilated bile duct), type II(shadow echo with proximal ductal dilatation), type III(hepatic shadow echo without ductal dilatation). 7 cases were classified as type I, 11 cases type II and 23 cases type III;Location of intrahepatic calculi was in the right lobe(13 cases), left(12 cases)and both lobes(15cases).There was no correlation between the location and sonographic type of intrahepatic stones. The following sonographic and cholangiographic parameters were analysed;(1)margin and intemal echogenecity of shadow echo in sonogram;(2)number, size of the calculi and impaction, aggregation of the calculi within the bile duct in cholangiogram. In sonogram, typel calculi showed relatively smooth margin and homogeneous internal ceho in contrast to type II and III with irregular margin and heterogeneous echo in majority. In cholangiogram, type I calculi showed small size less than 10mm and did not show aggregation or impaction into the bile duct. Type II calculi showed large size bigger than 10mm and tendency to impaction. Tyep III calculi revealed tendency of aggregation and impaction of calculi into the bile duct.
Keywords: bile ducts, US studies, stones
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