A Case of Liver Cystadenocarcinoma with Tumor Thrombus

Hidenori Yoshie, Tsukasa Aihara, Chiaki Yasui, Hiroya Iida, Shinichi Ikuta, Hidenori Yanagi, Ayako Kakuno¹⁾, Masakazu Tanimura²⁾ and Naoki Yamanaka

Department of Surgery and Department of Pathology¹⁾, Meiwa Hospital
Tanimura Surgery and Gastroenterology²⁾

We report the case of 50-year-old man presenting abdominal fullness and general fatigue, in whom a cystic liver tumor was detected by ultrasound screening. Abdominal computed tomography (CT) and magnetic resonance imaging (MRI) demonstrated a multilocular cystic liver tumor with a thrombus in the common bile duct. We conducted extended left and caudal hepatic lobectomy with extrahepatic bile duct resection. The cut surface of the resected specimen showed a multilocular and honeycomb like cyst. Pathological findings confirmed adenocarcinoma intermingling with adenoma on the cyst wall occurring in the fatty liver with fibrosis. This was compatible with a hepatic cystadenocarcinoma, type II-A in Group A, according to Kawarada's classification. The relationship of fatty liver and hepatic cystadenocarcinoma remains unclear, however we suspect that liver fibrosis could be a carcinogenetic factor.

Key words
hepatic cystadenocarcinoma, fatty liver, tumor thrombus

Reprint requests
Hidenori Yoshie Department of Surgery, Meiwa Hospital
4-31 Agenaruo-cho, Nisinomiya, 663-8186 JAPAN

Accepted
July 22, 2009

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