A Case of Mucin-Producing Bile Duct Adenoma

Kazuyo Tsuchiya, Kazuo Chijiiwa, Masahiro Kai, Jiro Ohuchida, Shuichiro Uchiyama, Hiroshi Itoh¹⁾, Hiroaki Kataoka¹⁾ and Shotaro Oshikawa²⁾

Department of Surgery 1, Department of Pathology 2¹⁾ and Department of Internal Medicine 1²⁾, Miyazaki University School of Medicine

Mucin-producing bile duct tumors are rare. More than 90% of bile duct tumors are adenocarcinomas, and only 7 cases of mucin-producing bile duct adenoma have been reported in the Japanese literature. We report a case of mucin-producing bile duct adenoma with a history of repeated abdominal pain and liver dysfunction. A 63-year-old woman was admitted to the hospital with abdominal pain and jaundice. ERCP revealed an irregular defect in the common bile duct and left hepatic duct. Although the lesion was not detected by per-oral cholangioscopy (POCS) because of the large amount of mucin, intraductal ultrasonography (IDUS) demonstrated a small polypoid lesion in the left hepatic duct. Extended left lobectomy of the liver was performed for a preoperative diagnosis of mucin-producing bile duct tumor, and the final pathological diagnosis was mucin-producing bile duct adenoma.

Key words
mucin producing bile duct adenoma, intraductal ultrasonography

Reprint requests
Kazuo Chijiiwa Department of Surgery I, Miyazaki University School of Medicine
5200 Kihara, Kiyotake, Miyazaki-gun, 889-1692 JAPAN

Accepted
February 23, 2005

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