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How to detect lesions of the gastric mucosa in a new era Takashi Kawai 1 , Yoshika Akimito 1 , Mariko Hamada 1 , Eri Iwata 1 , Ryota Niikura 1 , Naoyoshi Nagata 1 , Mitsushige Sugimoto 1 , Hayato Yamaguchi 2 , Yohei Koyama 2 , Masakatsu Fukuzawa 2 , Takao Itoi 2 , Jun Matsubayashi 3 , Toshitaka Nagao 3 1Department of Gastroenterological Endoscopy, Tokyo Medical University, Tokyo, Japan 2Department of Gastroenterology and Hepatology, Tokyo Medical University 3Department of Anatomic Pathology, Tokyo Medical University Keyword: gastric cancer , background mucosa of gastric cancer , intestinal metaplasia , autoimmune gastritis , ultra-thin transnasal endoscopy pp.171-180
Published Date 2024/2/25
DOI https://doi.org/10.24479/endo.0000001226
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 A long period of time (10-20 years) has passed since Helicobacter pylori (H. pylori) eradication therapy was initiated. The recovery from gastric mucosal atrophy associated with eradication has resulted in changes in the way the background mucosa and gastric cancer are observed. Findings related to gastric cancer risk are changing from endoscopic gastric mucosal atrophy to endoscopic gastric intestinal metaplasia. Furthermore, it is necessary to observe the background mucosa, bearing in mind that autoimmune gastritis may be latent in cases of unsuccessful H. pylori eradication. As the atypicality of the superficial layers of gastric cancer decreases, it becomes more difficult to diagnose gastric cancer by white light or dye-staining observation, and image-enhanced observation using method such as NBI and BLI, especially magnified observation, becomes more important. In addition, it has been reported that undifferentiated gastric cancer is more common than differentiated gastric cancer in gastric cancer patients more than 10 years after eradication, and detailed future studies are needed.


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電子版ISSN 印刷版ISSN 0915-3217 東京医学社

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