title: Retroperitoneal abscess associated with a perforated duodenal ulcer.
abstract: Retroperitoneal abscess after duodenal ulcer perforation is a rare condition. A 71-year-old woman was admitted with 1 month of appetite loss and back pain. Abdominal computed tomography scan showed a retroperitoneal mass behind the third and fourth portions of the duodenum. Single-balloon enteroscopy revealed erosion of the third portion of the duodenum with leakage of contrast agent into the retroperitoneal space. Based on a preoperative diagnosis of retroperitoneal abscess after duodenal perforation, laparotomy was performed. Partial duodenectomy with a duodeno-jejunal anastomosis was performed, and her postoperative course was uneventful. Pathology showed an ulcer with no specific findings.
authors.affiliation: Department of Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan. r0626as@jichi.ac.jp.
authors.forename: Ai
authors.initials: A
authors.lastname: Sadatomo
authors.affiliation: Department of Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Koinuma
authors.affiliation: Department of Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
authors.forename: Toru
authors.initials: T
authors.lastname: Zuiki
authors.affiliation: Department of Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
authors.forename: Alan T
authors.initials: AT
authors.lastname: Lefor
authors.affiliation: Department of Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Yasuda
keywords: Duodenal ulcer; Perforation; Retroperitoneal abscess