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Abdominal CT scan: circumferential thickening of the bile duct with dilatation of the biliary tree upstream.
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The abdominal CT scan (Figure 1) showed a peripheral thickening of the main bile duct spreading for 3.5 mm and placed 12 mm away from the roof of the biliary bifurcation, upstream of a distention of the biliary tree.
MRI cholangiopancreatography: wall regular thickening of the main bile duct with distal stenoses.
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 The MR cholangiopancreatography (Figure 2) objectified a moderate distension in the intrahepatic bile ducts with an alternation of the distension and thickening zones of the main bile duct evoking SC lesion.
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