Magnifying NBI Patterns of Gastric Mucosa After Helicobacter pylori Eradication and Its Potential Link to the Gastric Cancer Risk

Tomomitsu Tahara, Sayumi Tahara, Tetsuya Tuskamoto, Noriyuki Horiguchi, Dai Yoshida, Tomohiko Kawamura, Masaaki Okubo, Mitsuo Nagasaka, Yoshihito Nakagawa, Makoto Urano, Makoto Kuroda, Tomoyuki Shibata, Naoki Ohmiya

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Background: Gastric cancer develops after successful H. pylori eradication in patients with severe atrophic gastritis. We classified atrophic and non-atrophic mucosa of gastric body using magnifying NBI endoscopy in patients after successful H. pylori eradication. Materials and Methods: One hundred and twenty-five patients after successful H. pylori eradication (median period after eradication: 36 months) were enrolled. Magnifying NBI patterns in the uninvolved gastric body were divided into the following: restored-small, round pits, accompanied with honeycomb-like subepithelial capillary networks; atrophic-well-demarcated oval or tubulovillous pits with clearly visible coiled or wavy vessels. The subjects were also classified into the three types: Grade 0—restored pattern is shown in all or almost the entire area of gastric body; Grade 1—mixture of restored and atrophic pattern, there is a considerable portion of the atrophic area in the lesser curvature; Grade 2—atrophic pattern is shown in all or almost the entire area of the gastric body. Results: Sensitivity and specificity for atrophic type for detection of histological intestinal metaplasia were 95.9 and 98.3%, respectively. No association was observed between the prevalence of Grades 0, 1 and 2 and duration after eradication, while grades 1 and 2 were significantly frequent in gastric cancer patients diagnosed both before (27/35: 77%) and after (23/31: 74%) eradication, compared to the cancer-free subjects (15/59: 25%) (P < 0.001). The grades 1 and 2 were also common in patients who underwent H. pylori eradication for gastric ulcer. Conclusions: Magnifying the NBI pattern well correlates with pathological status of gastric mucosa after H. pylori eradication and may predict gastric cancer occurrence.

Original languageEnglish
Pages (from-to)2421-2427
Number of pages7
JournalDigestive Diseases and Sciences
Volume62
Issue number9
DOIs
Publication statusPublished - 01-09-2017

All Science Journal Classification (ASJC) codes

  • Physiology
  • Gastroenterology

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