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KMID : 0614619930250030581
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Korean Journal of Gastroenterology
1993 Volume.25 No. 3 p.581 ~ p.586
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Cystadenoma of the Extrahepatic Bile Duct
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송시영
전재윤/김원호/정재복/강진경/박인서/최홍재/이경식/박영년
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Abstract
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Cystic tumor of the intra- or extra- hepatic bile ducts is a rare but distinctive neoplasm, similar to that occurring in the pancreas or ovary. The cystadenomas of the extrahepatic biliary tree are extremely rare, and most of them are usually
intrahepatic, and rarely diagnosed preoperatively.
We report a 63-year-old woman admitted because of intermittent abdominal pain for 1 month. abdominal ultrasonography revealed a 2.5 cm hypoechoic oval mass with hyperechoic rim in dilated common hepatic duct and common bile duct. Abdominal
computerized
tomography revealed a hypodense mass surrounded by a thick dense outer rim. A 2.5×1.5cm filling defect hanging from the right hepatic duct with a stalk was noticed on endoscopic retrograde cholangiography (ERC). Under the diagnosis of benign
tumor
originating from extrahepatic bile duct, laparotomy was performed. A 2.5×1.8×0.6cm mass, clinged with stalk from the right hepatic duct was noted and could be removed by segmental resection of the common bile duct and the common hepatic duct.
On
cut
section, greenish serous fluid containing multilocular cysts surrounded by a smooth wall with 0.3cm thickness was seen. Microscopic findings revealed a cystadenoma lined by a single layer of columnar epithelium containing intracellular mucin
pools
without evidence of cellular atypism or mitosis.
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KEYWORD
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