title: Type II congenital biliary dilation (biliary diverticulum) with pancreaticobiliary maljunction successfully treated by laparoscopic surgery: report of a case.
abstract: Biliary diverticulum or type II congenital biliary dilation accounts for only 1-2% of all patients with congenital biliary dilation. The association between pancreaticobiliary maljunction (PBM) and this type of anomaly remains unclear. A 40-year-old Japanese woman presented with a history of repeated upper abdominal pain for more than 30 years. Computed tomography showed a cystic lesion (diameter 30 mm) arising from the common bile duct. Magnetic resonance cholangiopancreatography revealed a biliary diverticulum (diameter 33 mm) and the cystic duct entering the diverticulum. There was no dilation of the intrahepatic or extrahepatic ducts. Endoscopic retrograde cholangiopancreatography demonstrated PBM. A diagnosis of type II biliary diverticulum with PBM was made, and the patient underwent laparoscopic resection of the diverticulum combined with cholecystectomy. Pathological examination of the resected specimen showed slight inflammation, but no malignancy in the diverticulum or gallbladder. The patient's postoperative course was uneventful. To our knowledge, this is the first report of successful laparoscopic resection of biliary diverticulum associated with pancreaticobiliary maljunction.
authors.affiliation: Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kono
authors.affiliation: Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Takao
authors.initials: T
authors.lastname: Ohtsuka
authors.affiliation: Department of Anatomic Pathology, Pathological Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
authors.forename: Minoru
authors.initials: M
authors.lastname: Fujino
authors.affiliation: Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Noboru
authors.initials: N
authors.lastname: Ideno
authors.affiliation: Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Teppei
authors.initials: T
authors.lastname: Aso
authors.affiliation: Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Yosuke
authors.initials: Y
authors.lastname: Nagasyoshi
authors.affiliation: Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Yasuhisa
authors.initials: Y
authors.lastname: Mori
authors.affiliation: Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Shunichi
authors.initials: S
authors.lastname: Takahata
authors.affiliation: Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan.
authors.forename: Masafumi
authors.initials: M
authors.lastname: Nakamura
authors.affiliation: Department of Gastroenterology, Chikushi Hospital, Fukuoka University, Fukuoka, Japan.
authors.forename: Toshiharu
authors.initials: T
authors.lastname: Ueki
authors.affiliation: Departments of Surgery and Oncology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan. masaotan@med.kyushu-u.ac.jp.
authors.forename: Masao
authors.initials: M
authors.lastname: Tanaka
keywords: Biliary diverticulum; Choledochal cyst; Pancreaticobiliary maljunction