Biliary Cystic Tumor: Report of Three Cases

Suguru Yamashita, Nobutaka Tanaka, Shojiro Hata and Yoshio Suzuki*

Department of Surgery and Department of Pathology*, Kokuho Asahi General Hospital

Biliary cystic tumors, rare hepatic neoplasms, were recently divided into two groups based on the presence or absence of ovarian mesenchymal stroma and luminal communication with the bile duct. We present three cases of biliary cystic tumor. Case 1: A 21-year-old woman seen for cholangitis and found to have a biliary cystic tumor underwent extended right hepatectomy. She was definitively diagnosed with cystadenoma. Case 2: A 39-year-old woman with epigastralgia and found to have a hepatic multilocular cystic tumor with septations underwent left hepatectomy. She was also definitively diagnosed with cystadenoma. Case 3: A 61-year-old man found to have a cystic lesion with intrahepatic bile duct dilation in abdominal ultrasound testing during a regular physical checkup underwent left hepatectomy. He was definitively diagnosed with cystadenocarcinoma. All three cases showed luminal communication to the bile duct. Case 2 alone had ovarian mesenchymal stroma. The clinicopathological features of cases 1 and 3 resembled those of intraductal papillary neoplasm of the bile duct, which could be regarded as a biliary counterpart of pancreatic intraductal papillary mucinous neoplasm.

Key words
biliary cystic tumor, ovarian mesenchymal stroma, luminal communication with bile duct

Reprint requests
Suguru Yamashita Kokuho Asahi General Hospital
1326 I, Asahi, 289-2511 JAPAN

Accepted
October 28, 2009

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