title: Pancreatoduodenectomy for circumportal pancreas accompanying the retroportal pancreatic duct: a case report and review of the literature.
abstract: Circumportal pancreas (CP) is an extremely rare pancreatic fusion anomaly which is usually asymptomatic. This report presents the case of a patient with a tumor in the head of a CP and the retroportal accessory pancreatic duct in the pancreatic tissue behind the portal vein. A 53-year-old male was diagnosed with a nonfunctioning neuroendocrine tumor of the pancreas and resection of the tumor was scheduled. The patient was revealed to have CP on preoperative computed tomography and endoscopic retrograde cholangiopancreatography, which showed the pancreatic tissue encircling the portal vein and the retroportal accessory pancreatic duct. The patient safely underwent pylorus-preserving pancreatoduodenectomy reconstructed with pancreaticogastrostomy.
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan. tatsusho@yacht.ocn.ne.jp.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Shonaka
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Mitsuhiro
authors.initials: M
authors.lastname: Inagaki
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Hiromitsu
authors.initials: H
authors.lastname: Akabane
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Yanagida
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Hiroki
authors.initials: H
authors.lastname: Shomura
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Takeaki
authors.initials: T
authors.lastname: Kudo
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Orimo
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Futoshi
authors.initials: F
authors.lastname: Oikawa
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Aiyama
authors.affiliation: Division of Gastroenterology, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Yanagawa
authors.affiliation: Division of Pathology, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Kensuke
authors.initials: K
authors.lastname: Oikawa
authors.affiliation: Division of Surgery, Hokkaido P.W.F.A.C. Asahikawa-Kosei General Hospital, 1-24, Asahikawa, 078-8211, Japan.
authors.forename: Shiro
authors.initials: S
authors.lastname: Nakano
keywords: Circumportal pancreas; Pancreatic neuroendocrine tumor; Pancreaticogastrostomy; Pancreatoduodenectomy