A Case of Adenocarcinoma arising in A Duplicated Terminal Ileum

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  • Oshiro Yukio
    Department of Gastroenterological Surgery, University of Tsukuba
  • Ohkohchi Nobuhiro
    Department of Gastroenterological Surgery, University of Tsukuba
  • Nagata Chigusa
    Department of Pathology, Institute of Basic Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba
  • Inadome Yukinori
    Department of Pathology, Institute of Basic Medical Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba
  • Enomoto Tsuyoshi
    Department of Surgery, Ryugasaki Saiseikai Hospital
  • Matsuo Ryota
    Department of Surgery, Ryugasaki Saiseikai Hospital

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Other Title
  • 終末回腸重複腸管に発生した腺癌の１切除例

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A 40-year-old woman admitted for abdominal pain and melena was found in CT and MRI to have a 10-cm-diameter pelvic cavity mass necessitating ileocecal resection. Preoperative diagnosis was ileal gastrointestinal stromal tumor (GIST). Operative findings showed an 8-cm-diameter submucosal tumor in the terminal ileum. Histopathological findings showed adenocarcinoma arising in a duplicated terminal ileum. The thick-walled cystic tumor contained bloody fluid and the tumor appeared ileal wall. Adenocarcinoma was observed in the mucosa, invading to the muscle and subserosa. The patient was discharged without complications on postoperative day 11, required 7 courses Adjuvant chemotherapy of oral UFT/LV. The woman has had no recurrence or metastasis. To our knowledge, this is the first case of adenocarcinoma arising in a duplicated terminal ileum in Japan.

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