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Endoscopic Findings of H. pylori Infection

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Helicobacter pylori

Abstract

Chronic gastritis has usually been diagnosed by histological examination because of discrepancy between histological findings and endoscopic findings. However, recent advances in endoscopy have gradually clarified endoscopic findings that correspond to histological changes. According to the infectious condition of Helicobacter pylori, the gastric mucosa is divided into three states, normal mucosa without a history of H. pylori infection (non-gastritis), current H. pylori infection (active gastritis), and past history of H. pylori infection (inactive gastritis). The Kyoto classification of endoscopic gastritis is a novel classification system; 19 endoscopic findings related to gastritis are characterized according to infectious condition of H. pylori. Regular arrangement of collecting venules, diffuse redness, and maplike redness are highly specified characteristic features in each of the non-gastritis, active gastritis, and inactive gastritis states. Since the risk of gastric cancer is different among the three states of H. pylori, the diagnosis of gastric mucosa by endoscopic examination is important for screening of gastric cancer. Adequate evaluation of gastric mucosa by endoscopic examination requires appropriate training.

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Author information

Authors and Affiliations

  1. Division of Endoscopy, Hokkaido University Hospital, North 14, West 5, Kita-ku, Sapporo, Hokkaido, 060-8648, Japan

    Mototsugu Kato

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  1. Mototsugu Kato
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Correspondence to Mototsugu Kato .

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Editors and Affiliations

  1. Medical Education Center, Keio University School of Medicine, Tokyo, Japan

    Hidekazu Suzuki

  2. The Royal Perth Hospital, The University of Western Australia and, Western Australia, West Australia, Australia

    Robin Warren

  3. The Royal Perth Hospital, The University of Western Australia and, Western Australia, Australia

    Barry Marshall

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Kato, M. (2016). Endoscopic Findings of H. pylori Infection. In: Suzuki, H., Warren, R., Marshall, B. (eds) Helicobacter pylori. Springer, Tokyo. https://doi.org/10.1007/978-4-431-55705-0_10

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  • DOI: https://doi.org/10.1007/978-4-431-55705-0_10

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  • Print ISBN: 978-4-431-55704-3

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