Journal of Gastric Cancer

  • 제16권3호
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  • Pages.152-160
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  • 2016
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  • 2093-582X(pISSN)
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  • 2093-5641(eISSN)
대한위암학회 (The Korean Gastric Cancer Association)
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Usefulness of Endoscopic Imaging to Visualize Regional Alterations in Acid Secretion of Noncancerous Gastric Mucosa after Helicobacter pylori Eradication

  • Uno, Kaname (Division of Gastroenterology, Tohoku University Graduate School of Medicine) ;
  • Iijima, Katsunori (Department of Gastroenterology, Akita University Graduate School of Medicine) ;
  • Abe, Yasuhiko (Department of Gastroenterology, Yamagata University Graduate School of Medicine) ;
  • Koike, Tomoyuki (Division of Gastroenterology, Tohoku University Graduate School of Medicine) ;
  • Takahashi, Yasushi (Division of Gastroenterology, Tohoku University Graduate School of Medicine) ;
  • Ara, Nobuyuki (Division of Gastroenterology, Tohoku University Graduate School of Medicine) ;
  • Shimosegawa, Tooru (Division of Gastroenterology, Tohoku University Graduate School of Medicine)
  • 투고 : 2016.05.09
  • 심사 : 2016.06.13
  • 발행 : 2016.09.30
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초록

Purpose: Endoscopic diagnosis of gastric cancer (GC) that emerges after eradication of Helicobacter pylori may be affected by unique morphological changes. Using comprehensive endoscopic imaging, which can reveal biological alterations in gastric mucosa after eradication, previous studies demonstrated that Congo red chromoendoscopy (CRE) might clearly show an acid non-secretory area (ANA) with malignant potential, while autofluorescence imaging (AFI) without drug injection or dyeing may achieve early detection or prediction of GC. We aimed to determine whether AFI might be an alternative to CRE for identification of high-risk areas of gastric carcinogenesis after eradication. Materials and Methods: We included 27 sequential patients with metachronous GC detected during endoscopic surveillance for a mean of 82.8 months after curative endoscopic resection for primary GC and eradication. After their H. pylori infection status was evaluated by clinical interviews and $^{13}C$-urea breath tests, the consistency in the extension of corpus atrophy (e.g., open-type or closed-type atrophy) between AFI and CRE was investigated as a primary endpoint. Results: Inconsistencies in atrophic extension between AFI and CRE were observed in 6 of 27 patients, although CRE revealed all GC cases in the ANA. Interobserver and intraobserver agreements in the evaluation of atrophic extension by AFI were significantly less than those for CRE. Conclusions: We demonstrated that AFI findings might be less reliable for the evaluation of gastric mucosa with malignant potential after eradication than CRE findings. Therefore, special attention should be paid when we clinically evaluate AFI findings of background gastric mucosa after eradication (University Hospital Medical Information Network Center registration number: UMIN000020849).

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참고문헌

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  1. Acidic bile salts induces mucosal barrier dysfunction through let-7a reduction during gastric carcinogenesis after Helicobacter pylori eradication vol.9, pp.26, 2018, https://doi.org/10.18632/oncotarget.24725