Clinical and Endoscopic Features of Submucosal Tumors of the Small Intestine Koichi Kurahara 1 , Yuichiro Yoshida 1 , Hiroshi Wachi 1 , Yumi Oshiro 2 , Yoshiaki Aomi 1 , Keisuke Kawasaki 1,3 , Hideki Ishibashi 1,4 , Hitomi Matsuba 1 , Takashi Hirata 1 , Shohei Uraoka 1 , Hiroki Yaita 1 , Motohiro Esaki 5 , Takashi Yao 6 , Hiroyuki Kobayashi 1,7 , Takayuki Matsumoto 3 , Akinori Iwashita 2,8 , Tadahiko Fuchigami 1 1Division of Gastroenterology, Matsuyama Red-cross Hospital, Matsuyama, Japan 2Department of Pathology, Matsuyama Red-cross Hospital, Matsuyama, Japan 3Division of Gastroenterology, Department of Internal Medicine, School of Medicine, Iwate Medical University, Morioka, Japan 4Department of Gastroenterology and Medicine, Faculty of Medicine, Fukuoka University, Fukuoka, Japan 5Department of Endoscopic Diagnostics and Therapeutics, Saga University Hospital, Saga, Japan 6Department of Human Pathology, Juntendo University, School of Medicine, Tokyo 7Institute of Gastroenterology, Fukuoka Sanno Hospital, Fukuoka, Japan 8AII Research Institute of Pathology & Image Diagnosis, Chikushino, Japan Keyword: 小腸 , 粘膜下腫瘍 , 内視鏡診断 , カプセル小腸内視鏡 , バルーン小腸内視鏡 pp.473-484
Published Date 2019/4/25
DOI https://doi.org/10.11477/mf.1403201622
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 In this study, based on our own cases and reviews of past reports, we investigated morphological features and differential diagnosis of the following tumors and tumorous lesions in the small intestine exhibiting submucosal tumor-like bulging:GIST(gastrointestinal stromal tumor), lipoma, IFP(inflammatory fibroid polyp), ectopic pancreas, NET(neuroendocrine tumor), inversion of Meckel's diverticulum, lymphangioma, pyogenic granuloma, and Dieulafoy's lesion/AVM(arteriovenous malformation). For differential diagnosis, it is important to confirm surface characteristics and color tone of not only the top part of a tumorous lesion but also its stem, in addition to the presence or absence of growth outside the gastrointestinal tract. In addition, in the case of overt bleeding, it is necessary to consider the possibility of vascular lesions, including pyogenic granuloma and Dieulafoy's lesion/AVM.

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