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How to Diagnose the Stomach as Negative for H. pylori Mitsushige SUGIMOTO 1 , Yusuke KAWAI 1 , Mariko HAMADA 1 , Eri IWATA 1 , Ryota NIIKURA 1 , Naoyoshi NAGATA 1 , Takashi KAWAI 1 1Department of Gastroenterological Endoscopy, Tokyo Medical University Hospital, Tokyo, Japan Keyword: Kyoto classification of gastritis , urea breath test , stool antigen test pp.151-159
Published Date 2022/2/25
DOI https://doi.org/10.24479/endo.0000000033
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 With the increased number of H. pylori eradication therapies, the infection rate has been decreasing in Japan. Although the rate of H. pylori-negative gastric cancer increases of patients with gastric cancer, H. pylori-negative gastric cancer can divide into two types: H. pylori-uninfected gastric cancer and post-eradicated gastric cancer. Because H. pylori infection is a major risk factor for gastric cancer development, it is necessary to correctly diagnose H. pylori infection. In general, H. pylori infection is detected by culture, histology, and rapid urease tests as invasive detection methods, and by antibodies, urea breath tests, and stool antigen tests as non-invasive methods. Recently, the Kyoto classification of gastritis shows the efficacy of evaluating infection status by characteristics for H. pylori infection, such as diffuse redness, mucosal edema, intestinal metaplasia, and atrophy. In this issue, we will show points to note about how to diagnose H. pylori infection, which is an important factor in the development of gastric cancer, and outline how to make a negative diagnosis of H. pylori.


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電子版ISSN 印刷版ISSN 0915-3217 東京医学社

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