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Endoscopic Findings with Magnification of Serrated Lesions in the Colorectum Toshio Uraoka 1,2 , Reiji Higashi 3 , Nobuya Ohara 4 , Eisuke Kaji 5 , Shin Ishikawa 5 , Keisuke Hori 5 , Hideyuki Suzuki 5 , Shunsuke Saito 5 , Mitsuhiro Akita 5 , Tomoko Hirakawa 5 , Sakuma Takahashi 5 , Jun Kato 6 , Hiroyuki Okada 2 , Kazuhide Yamamoto 5 1Division for Research and Development of Minor Invasive Treatment, Cancer Center, Keio University School of Medicine, Tokyo 2Department of Endoscopy, Okayama University Hospital, Okayama, Japan 3Department of Internal Medicine, Hiroshima City Hospital, Hiroshima, Japan 4Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan 5Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan 6Second Department of Internal Medicine, Wakayama Medical University, Wakayama, Japan Keyword: 大腸鋸歯状病変 , sessile serrated adenoma/polyp , 拡大内視鏡 , pit pattern , varicose microvascular vessel pp.406-416
Published Date 2011/4/25
DOI https://doi.org/10.11477/mf.1403102178
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 Recent molecular biological studies produced evidence for classifying serrated lesions in the colorectum into HP(hyperplastic polyp), SSA/P(sessile serrated adenoma/polyp)and TSA(traditional serrated adenoma). SSA/P and TSA are known as precursor lesions of serrated neoplastic pathways, but, there were a few reports of endoscopic findings including magnified observation of serrated lesions. In this investigation, we concluded that there was no significant pit pattern with magnification associated with the differentiation between HP and SSA/P. As endoscopic findings without magnification,“lesion size greater than 10mm”and“much mucous on the lesion surface”were significant findings for diagnosis of SSA/P. In contrast, IIIH and IVH pit patterns were useful for diagnosing TSA.


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

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