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Endoscopic diagnosis of Helicobacter pylori gastritis using white light imaging and texture and color enhancement imaging.

ABSTRACT: Background and study aims Texture and color enhancement imaging (TXI) is a new image-enhanced endoscopy that augments subtle tissue differences and color changes in gastric mucosa. This study aimed to compare the usefulness of TXI and white light imaging (WLI) for diagnosing Helicobacter pylori gastritis. Patients and methods We retrospectively prepared one image set with 22 endoscopic images acquired by WLI and TXI from 60 consecutive patients individually. Five endoscopists independently reviewed the randomly displayed image sets and assessed the H. pylori infection status on endoscopy according to the Kyoto Classification of Gastritis. The primary endpoints were the accuracies of WLI and TXI in diagnosing H. pylori -active gastritis. The correlation of the endoscopic features with the three H. pylori infection statuses (current infection, past infection, and noninfection) was also evaluated. Results Diagnostic accuracy for active gastritis was significantly higher in TXI than in WLI (85.3 % vs. 78.7 %; P = 0.034). All the specific endoscopic features associated with H. pylori infection statuses had a higher odds ratio with TXI than with WLI. Additionally, interobserver agreement among the five reviewers was higher in TXI than in WLI, except for one pair. Conclusions TXI may improve the endoscopic diagnosis accuracy for H. pylori infection.

SUBMITTER: Kitagawa Y

PROVIDER: S-EPMC9894691 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature

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Endoscopic diagnosis of Helicobacter pylori gastritis using white light imaging and texture and color enhancement imaging.

Kitagawa Yoshiyasu Y Koga Kunishige K Ishigaki Asuka A Nishii Rino R Sugita Osamu O Suzuki Takuto T

Endoscopy international open 20230202 2

Background and study aims Texture and color enhancement imaging (TXI) is a new image-enhanced endoscopy that augments subtle tissue differences and color changes in gastric mucosa. This study aimed to compare the usefulness of TXI and white light imaging (WLI) for diagnosing Helicobacter pylori gastritis. Patients and methods We retrospectively prepared one image set with 22 endoscopic images acquired by WLI and TXI from 60 consecutive patients individually. Five endoscopi ...[more]

PMID: 36741344

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Project description:BackgroundThere is lack of clinical evidence supporting the value of the Kyoto classification of gastritis for the diagnosis of Helicobacter pylori (H. pylori) infection in Chinese patients, and there aren't enough specific features for the endoscopic diagnosis of past infections, which is of special significance for the prevention of early gastric cancer (GC).MethodsThis was a prospective and multicenter study with 650 Chinese patients. The H. pylori status and gastric mucosal features, including 17 characteristics based on the Kyoto classification and two newly-defined features unclear atrophy boundary (UAB) and RAC reappearance in atrophic mucosa (RAC reappearance) were recorded in a blind fashion. The clinical characteristics of the subjects were analyzed, and the diagnostic odds ratio (DOR), sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), area under the receiver operating characteristics curve (ROC/AUC), and 95% confidence intervals were calculated for the different features, individually, and in combination.ResultsFor past infection, the DOR of UAB was 7.69 (95%CI:3.11-19.1), second only to map-like redness (7.78 (95%CI: 3.43-17.7)). RAC reappearance showed the highest ROC/AUC (0.583). In cases in which at least one of these three specific features of past infection was considered positive, the ROC/AUC reached 0.643. For current infection, nodularity showed the highest DOR (11.7 (95%CI: 2.65-51.2)), followed by diffuse redness (10.5 (95%CI: 4.87-22.6)). Mucosal swelling showed the highest ROC/AUC (0.726). Regular arrangement of collecting venules (RAC) was specific for no infection.ConclusionsThis study provides evidence of the clinical accuracy and robustness of the Kyoto classification of gastritis for the diagnosis of H. pylori in Chinese patients, and confirms UAB and RAC reappearance partly supplement it for the diagnosis of past infections, which is of great benefit to the early prevention of GC.

Dataset Information

Endoscopic diagnosis of Helicobacter pylori gastritis using white light imaging and texture and color enhancement imaging.

Publications

Endoscopic diagnosis of <i>Helicobacter pylori</i> gastritis using white light imaging and texture and color enhancement imaging.

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