title: Pancreaticoduodenectomy for pancreas carcinoma occurring in the annular pancreas: report of a case.
abstract: The annular pancreas is a rare congenital anomaly in which a ring of the pancreas parenchyma surrounds the second part of the duodenum. Malignant tumors are extremely rare in patients with an annular pancreas. A 64-year-old man presented with appetite loss and vomiting. Abdominal contrast-enhanced computed tomography (CT) indicated pancreas parenchyma surrounding the second part of the duodenum, and a hypovascular area occupying lesion in the annular pancreas. Subtotal stomach-preserving pancreaticoduodenectomy was performed. Histopathology showed pancreatic carcinoma occurring in the complete annular pancreas.
authors.affiliation: First Department of Surgery, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan, hrkawaida@yahoo.co.jp.
authors.forename: Hiromichi
authors.initials: H
authors.lastname: Kawaida
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kono
authors.forename: Mitsuaki
authors.initials: M
authors.lastname: Watanabe
authors.forename: Akira
authors.initials: A
authors.lastname: Maki
authors.forename: Hidetake
authors.initials: H
authors.lastname: Amemiya
authors.forename: Masanori
authors.initials: M
authors.lastname: Matsuda
authors.forename: Hideki
authors.initials: H
authors.lastname: Fujii
authors.forename: Mitsuharu
authors.initials: M
authors.lastname: Fukasawa
authors.forename: Ei
authors.initials: E
authors.lastname: Takahashi
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Sano
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Inoue
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008207:Lymphatic Metastasis; D008297:Male; D008875:Middle Aged; D010179:Pancreas / Q000002:abnormalities* / Q000601:surgery; D010182:Pancreatic Diseases / Q000601:surgery*; D010190:Pancreatic Neoplasms / Q000473:pathology / Q000601:surgery*; D016577:Pancreaticoduodenectomy