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Clinical Features of Gastrointestinal Amyloidosis, with an Emphasis on Imaging Diagnosis : Characteristics of Colonic Lesions Kiyotaka Okawa 1 , Wataru Ueda 1 , Tomohide Mukogawa 2 , Hirofumi Ishikawa 2 , Akihiko Watanabe 2 , Toshiya Nakatani 3 , Eiryou Kikuchi 3 , Tetsuya Aoki 1 , Hiroko Ohba 1 , Masato Miyano 1 , Seiko Yamaguchi 1 , Osamu Kurai 1 , Satoshi Shiraishi 4 , Yoshimi Sugama 4 , Ayaka Takagi 4 , Takehisa Suekane 5 , Koji Sano 5 1Department of Gastroenterology, Osaka City Juso Hospital, Osaka, Japan 2Department of Surgery, Nara Prefectural Nara Hospital, Nara, Japan 3Department of Gastroenterology, Nara Prefectural Nara Hospital, Nara, Japan 4Department of Respiratory Medicine, Osaka City Juso Hospital, Osaka, Japan 5Department of Gastroenterology, Osaka City General Hospital, Osaka, Japan Keyword: 消化管アミロイドーシス , 大腸病変 , 内視鏡診断 , 顆粒状粘膜 , 粘膜下血腫 pp.321-334
Published Date 2014/3/25
DOI https://doi.org/10.11477/mf.1403114093
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 We report two cases of amyloidosis. A case of AA amyloidosis with bronchiectasis that revealed discontinuous granular appearance in the colon, and a case of primary AL amyloidosis that revealed submucosal hematomas in the colon.

 The following are the endoscopic findings of the colon in AA amyloidosis, granular appearance, vascular growth, small ulcers, macular redness, and easy bleeding. Granular appearance and vascular growth, which reflect amyloid deposits in the lamina propria, are important endoscopic findings for diagnosis of AA amyloidosis. The granular appearance results from swelling colonic areas. The endoscopic findings of the colon in AL amyloidosis revealed submucosal tumor-like lesions, submucosal hematomas, ulcers, macular redness, and easy bleeding. Submucosal tumor-like lesions and submucosal hematomas are important endoscopic findings for diagnosis of AL amyloidosis. Submucosal tumor-like lesions reflect massive amyloid deposits, and submucosal hematomas correlate with vessel friability caused by amyloid deposits of the vessel walls. Colonic lesions of AL amyloidosis are often seen in the sigmoid colon and the rectum.


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

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