A Case Report of Mucinous Cystadenoma of the Gallbladder with Mucinous Biliary Obstruction

Yoshihiko Funato, Hirotaka Kishikawa, Katsumi Nakamae, Tatsuya Tohyama, Motoki Yano, Tsutomu Mizuno*

Department of Surgery, Nagoya City Johsai Hospital
*Second Department of Pathology, Nagoya City University Medical School

An 83-year-old man was referred to the hospital because of general fatigue. Laboratory studies revealed some hepatic dysfunctions and the total bilirubin was 2.2 mg per dl. Abdominal ultrasound demonstrated a gallbladder tumor which surrounded the neck and corpus of the gallbladder. Endoscopic retrograde cholangiogram reveald a dilated common bile duct containing a radiolucent filling defect. The papilla of Vater was swollen and the mucinous secretion could be seen originating from it. Percutaneous transhepatic cholecystgraphy showed irregular filling defect that surrounded the neck and corpus of the gallbladder. Cholecystectomy was performed under suspicion of a mucus-prducing gallbladder tumor. There was thick adhesive mucus on the neck and corpus of the gallbladder. On the histologic sections of the surgical specimen, hyperplastic mucinous cells with focal adenomatous proliferation formed microcysts and papillae. Pathological diagnosis was mucinous cystadenoma. The localization of the tumor corresponded to that of the mucinous substance. The postoperative course was uneventful. We believe this lesion represents the first reported case of gallbladder mucinous cystadenoma that showed mucinous biliary obstruction.

Key words
mucinous cystadenoma of the gallblandder

Reprint requests
Yoshihiko Funato Department of Surgery, Nagoya City Johsai Hospital
4-1 Kitahata-cho, Nakamura-ku, Nagoya, 453 JAPAN

Accepted
February 9, 1994

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