Endoscopic features with linked-color imaging of non–Helicobacter pylori Helicobacter-associated gastritis: a case study

Abstract

Background and aimsThe endoscopic findings of non-Helicobacter pylori Helicobacter (NHPH) are not widely known. Linked color imaging (LCI) has emerged as a new system for image-enhanced endoscopy (IEE) that enhances color tone and improves visibility. The aim of this case study was to assess how endoscopic findings of NHPH are enhanced with LCI. MethodsWe report a case of a 72-year-old woman in whom an NHPH species was found during esophagogastroduodenoscopy (EGD) using LCI. ResultsThe EGD did not reveal any endoscopic findings of diffuse redness, patchy redness or atrophy. However, erosions, non-uniform redness, and crack-like mucosa were seen in the antrum, and LCI enhanced endoscopic findings. In addition, nodular gastritis and a white marbled appearance were also observed in the antrum; LCI and blue laser imaging enhanced endoscopic findings. Floating bacterial bodies with a fine coil-like shape and diameter longer than that of H. pylori were pathologically observed in the mucus suggesting NHPH. A PCR test led to a diagnosis of Helicobacter suis. ConclusionsOur case demonstrates that IEE is useful in diagnosing NHPH. The detection of NHPH using IEE enabled us to contribute to an improved diagnosis of NHPH.