A Resected Case of Liver Mucinous Cystadenoma Arising From Caudate Lobe

Harumi Yamamoto, Yasuhiko Nagano, Masayuki Nakashima, Shoichi Fujii, Chikara Kunisaki, Takeshi Sasaki* and Hiroshi Shimada**

Department of Gastroenterological Surgery and Pathology*, Yokohama City University Medical Center Gastroenterological Center
Yokohama City University Graduate School of Medicine**

We report a rare case of hepatic mucinous cystadenoma (MCA) of the caudate lobe. A 74-year-old woman referred for epigastralgia was found in abdominal ultrasonography and computed tomography to have a multicystic tumor of the hepatic caudate lobe with an 7 cm in diameter enhanced septum and partial wall calcification. Based on a preoperative diagnosis of hepatic MCA, we conducted a left hepatectomy and caudate lobectomy in April 2007. The multicystic tumor contained mucus and the hepatic caudate lobe was thinned. Pathologically, the cyst wall was covered with columnar epithelium containing ovarian-like stroma but was free of malignant components. Differentiating cystadenoma and cystadenocarcinoma before surgery is difficult, even histologically. Since hepatic MCA is a rare neoplasm with possible malignant formation, we recommend complete tumor resection.

Key words
hepatic mucinous cystadenoma, caudate lobe, ovarian-like stroma

Reprint requests
Yasuhiko Nagano Gastroenterological Center, Yokohama City University Medical Center
4-57 Urafune-cho, Minami-ku, Yokohama, 232-0024 JAPAN

Accepted
October 22, 2008

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