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Histological anatomy of the stomach and endoscopic images Kazuyoshi YAGI 1 , Shuji TERAI 2 1Department of Gastroenterology and Hepatology, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital 2Division of Gastroenterology and Hepatology, Graduate School of Medical and Dental Sciences, Niigata University Keyword: magnifying endoscopy , H.pylori , chronic gastritis pp.14-26
Published Date 2022/10/20
DOI https://doi.org/10.24479/endo.0000000342
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 In the majority of cases, chronic gastritis is caused by H.pylori infection; the exceptions are in cases of specialized gastritis, autoimmune gastritis, and so on. The pathology of chronic gastritis is as follows: fundic glands change to pyloric gland metaplasia and intestinal metaplasia with inflammation including that of neutrophils. The normal stomach without H.pylori infection consists of a fundic gland mucosa other than pyloric gland mucosa around the pyloric ring. The surface epithelium of the pyloric gland mucosa forms a gutter with crypts, resulting in a tubular pattern. On the other hand, the fundic gland mucosa forms round pits with crypts. As the inflammation of H.pylori transforms the fundic gland to a pyloric gland mucosa, the pattern of the surface epithelium changes from round pits to a tubular pattern, which is similar to that of the pyloric gland mucosa. In active gastritis, the fundic gland mucosa shows red color and an atrophic mucosa shows whitish color; however, in inactive gastritis, the fundic gland mucosa shows whitish color and the atrophic mucosa shows red color. Furthermore, an intermediate zone, which consist of a combination of fundic gland and intestinal metaplasia, becomes visible in inactive gastritis.


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電子版ISSN 印刷版ISSN 0915-3217 東京医学社

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