A Case of Intrahepatic Biliary Cystadenocarcinoma

Naohito Kanazumi, Yuichi Suzuki, Aya Motoyama, Daisuke Kobayashi, Kouichi Kato, Takehiko Eguchi, Jiro Kimura and Masataka Ishii

Department of Surgery, Okazaki City Hospital

A 59-year-old women admitted for further examination of liver function disorder in a blood chemistry test, incidentally pointed out by screening, was found in abdominal computed tomography (CT) to have a cystic tumor 4 cm in diameter with papillary projections arising from the cystic wall, which were enhanced by contrast material, in the left medial segment of the liver. T1-weighted magnetic resonance imaging (MRI) showed a low-intensity lesion with an inner structure of lower intensity than that of the liver A large part of tumor had markedly high intensity and the inner structure had slight high intensity in T2-weighted MRI. Selective arteriography showed stretching of the hepatic arterial branches, focal tumor vessels, and tumor stains. Based on a diagnosis of biliary cystadenocarcinoma, extended left hepatic lobectomy including resection of the left caudate lobe, bile duct resection, and lymph node dissection were conducted. Examination of the resected specimen showed a 4×3×5 cm multilocular cystic tumor with prominent papillary projections inside, consisting of a jelly-like mucinous substance. Histopathologically the cystic tumor was diagnosed as biliary cystadenocarcinoma. The patient is doing well and has no recurrence as of 2 years and 2 months after surgery.

Key words
biliary cystadenocarcinoma, hepatic cystic tumors, bile duct cystadenocarcinoma

Reprint requests
Naohito Kanazumi Department of Surgery, Okazaki City Hospital 3-1 Goshoai, Koryuji-cho, Okazaki, 444-8553 JAPAN

Accepted
May 1, 2002

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