CHOLANGIOGRAPHIC STUDIES OF INTRAHEPATIC BILE DUCT:Analyses of Anatomical Pattern and Rigidity and Dilatation of the System as Pathological features

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For the purpose of analysing the patterns of cholangiographic changes in various pathological conditions and correlating them with each other, study was made in 52 autopsy and 483 clinical materials. Stereographic technic was employed in 100 of these 535 cases.1) Stereographic technic was particularly useful in delineating intrahepatic biliary system, and might well be a valuable adjunct for clinical purposes.2) There was a great variation in the pattern of intrahepatic biliary system in the right lobe in particulary. Based on the mode of the confluence of the first to the third order radicals mainly of the right side hepatic ducts, no fewer than 35 types of variation were counted in the pattern of the main intrahepatic bile ducts, in an analysis of 100 cases. The mode of the junction of the right and left hepatic ducts could be divided basically into 6 types.3) The degrees of rigidity of the duct contour observed in cholangiograms and thickening of the duct wall in the microscopical examinations were in close correlation.4) Rigidity of the bile duct was considered to be essentially indicative of the inflammatory process exsisting in the biliary system. Therefore, this finding in cholangiograms might well be a useful parameter in the differential diagnosis of various disease processes in the biliary system.5) It was also suggested that dilatation of the intrahepatic bile duct was mainly dependent on the degree and duration of the obstructive process, but that the role played by co-existing thickening of the duct wall might be as important.
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CHOLANGIOGRAPHIC STUDIES OF INTRAHEPATIC BILE DUCT:Analyses of Anatomical Pattern and Rigidity and Dilatation of the System as Pathological features

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