Evaluation of the effectiveness of endoscopic diagnostics of esophagogastric junction pathology using blue light imaging (BLI)

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Abstract

Background. Currently, advanced endoscopic imaging techniques allow obtaining highly detailed images previously unavailable for white light endoscopy, but the operator-dependent nature of their interpretation is an obstacle to their successful application in practice. The development of standardized criteria using computer technology and simplification of classification systems will reduce the impact of the learning curve of an endoscopist, as well as consolidate the results obtained and evaluate the effectiveness of a single option in numerical values.

The aim of the study was to evaluate the effectiveness of blue light imaging technology in gastroesophageal junction pathology.

Materials and methods. The study included 100 patients who underwent video esophagogastroduodenoscopy using blue light imaging and targeted biopsy. The color contrast of the BLI mode and examination in white light findings were compared.

Results. The study revealed samples of hyperplasia, intestinal and gastric metaplasia of the esophagus combined with inflammation.

Conclusions. Based on the conducted study, it can be stated that BLI, used as an additional mode in standard esophagogastroduodenoscopy, has a high color contrast, which can be helpful in the diagnosis of hyperplasia and other epithelial abnormalities of the upper gastrointestinal tract.

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About the authors

Evgeniy O. Ilyushnikov

Russian University of Medicine; Federal Clinical Research Centre of Russia’s Federal Medical-Biological Agency Russian Federation

Author for correspondence.
Email: akatosh888@mail.ru
ORCID iD: 0000-0003-0391-4767
SPIN-code: 1790-5571

Endoscopist at the University Clinic, junior research assistant, Department of Surgery and Surgical Technologies

Russian Federation, Moscow; Moscow

Dmitriy V. Sazonov

Federal Clinical Research Centre of Russia’s Federal Medical-Biological Agency Russian Federation

Email: dvsazonov@mail.ru
ORCID iD: 0000-0002-3253-300X
SPIN-code: 5062-9323

Ph.D., Head of the Endoscopic Department of the Federal State Budgetary Institution FNCC of the FMBA of Russia

Russian Federation, Moscow

Dmitriy N. Panchenkov

Russian University of Medicine; Federal Clinical Research Centre of Russia’s Federal Medical-Biological Agency Russian Federation

Email: dnpanchenkov@mail.ru
ORCID iD: 0000-0001-8539-4392
SPIN-code: 4316-4651

M.D., Professor, Head of the Department of Surgery and Surgical Technologies

Russian Federation, Moscow; Moscow

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Supplementary files

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2. Fig. 1. Processing of the received endoscopic photo. 1a) White light native image. 1b) Averaged colors of normal and affected areas. 2a) BLI mode examination. 2b) Averaged colors of normal and affected areas in BLI mode.

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3. Fig. 2. Formed groups of color samples according to pathology. 1a) Focus of mucosal hyperplasia. 1b) Focus of mucosal hyperplasia with background inflammation. 2a) Focus of gastric metaplasia. 2b) Focus of gastric metaplasia with background inflammation. 3a) Focus of intestinal metaplasia. 3b) Focus of intestinal metaplasia with background inflammation.

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