title: A Case of Serous Cystadenoma Communicating with a Stenotic Santorini's Duct and a Dilated Main Pancreatic Duct.
abstract: A 59-year-old woman was referred for investigation of a pancreatic cystic lesion. Computed tomography revealed a well-demarcated, multilocular cyst, approximately 4 cm in size, at the pancreas head. Endoscopic ultrasonography demonstrated honeycomb-like components at the cyst margin. The cyst was associated with a widely-dilated upstream main pancreatic duct (MPD). Endoscopic retrograde pancreatography demonstrated a communication between the stenotic Santorini's duct and the cyst. Aspiration cytology from the cyst demonstrated clusters of mucinous epithelial neoplasm cells. Branch-type intraductal papillary mucinous neoplasm, possibly invading to the MPD, was suspected and pancreatoduodenectomy was performed. Surprisingly, pathology of the resected pancreas showed mixed-type serous cystadenoma.
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, 411-8777, Japan. h.matsubayashi@scchr.jp.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Matsubayashi
authors.affiliation: Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, 411-8777, Japan.
authors.forename: Yurika
authors.initials: Y
authors.lastname: Oka
authors.affiliation: Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, 411-8777, Japan.
authors.forename: Takaaki
authors.initials: T
authors.lastname: Ito
authors.affiliation: Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, 411-8777, Japan.
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Uesaka
authors.affiliation: Pathology, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, 411-8777, Japan.
authors.forename: Keiko
authors.initials: K
authors.lastname: Sasaki
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, Nagaizumi, Suntogun, Shizuoka, 411-8777, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ono
mesh_terms: D001706:Biopsy; D002760:Cholangiopancreatography, Endoscopic Retrograde; D049448:Cholangiopancreatography, Magnetic Resonance; D002779:Cholestasis / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D003251:Constriction, Pathologic; D018293:Cystadenoma, Serous / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D004108:Dilatation, Pathologic; D019160:Endosonography; D005260:Female; D006801:Humans; D008875:Middle Aged; D010181:Pancreatic Cyst / Q000473:pathology* / Q000628:therapy; D010183:Pancreatic Ducts / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D010190:Pancreatic Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D016577:Pancreaticoduodenectomy; D014057:Tomography, X-Ray Computed