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An Arteriovenous Malformation of the Rectum, Report of a Case Shin Ogawa 1 , Masaki Kitazono 1 , Kazuaki Tabu 1 , Sumiya Ishigami 1 , Hiroyuki Shinchi 1 , Shinichi Ueno 1 , Takashi Ishizawa 2 , Yasutaka Baba 3 , Sadao Hayashi 3 , Michiyo Higashi 4 , Suguru Yonezawa 4 , Kiyoshi Niwa 5 , Yukinori Sameshima 5 , Takashi Sameshima 5 , Shoji Natsugoe 1 1Department of Surgical Oncology and Digestive Surgery, Kagoshima University, Kagoshima, Japan 2School of Health Sciences, Faculty of Medicine, Kagoshima University, Kagoshima, Japan 3Department of Radiology, Kagoshima University, Kagoshima, Japan 4Department of Human Pathology, Kagoshima University, Kagoshima, Japan 5Sameshima Hospital, Kagoshima, Japan Keyword: 直腸 , 動静脈奇形 , 特発性腸間膜静脈硬化症 , 海綿状血管腫 pp.221-226
Published Date 2009/2/25
DOI https://doi.org/10.11477/mf.1403101583

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 A 52-year-old female who had suffered from unexplained melena since she was 12 years of age was admitted to our hospital. Colonoscopy showed a wine-colored mucosa and venous stasis of the sigmoid colon and the rectum. Computed tomography detected a significantly thickened and calcified mesorectum. Angiography identified a superior rectal vein with hypodense contrast, whereas there was no evidence of any arteriovenous malformaion. These findings before surgery led to the suspiction of idiopathic mesenteric phlebosclerosis. A laparoscopy-assisted super low anterior resection of the rectum with covering stoma was performed to treat the chronic colitis with serious melena. Histological findings revealed diffuse dilated vessels in the rectal tissue specimen, in which both vein-like and artery-like walls were connected with each other. Finally, this lesion was diagnosed as arteriovenous malformation of the rectum. We should keep in mind the possible existence of arteriovenous malformation, when a patient has experienced continuous melena occurring since childhood.


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電子版ISSN 1882-1219 印刷版ISSN 0536-2180 医学書院

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