[Efficiency of new NBI technology for endoscopic examination of patients with chronic gastritis]

The aim of this work was to compare efficiency of a new digital endoscopic system in combination with the NBI technology and routine endoscopic examination of patients with chronic gastritis. 181 of the 831 patients with different forms of chronic gastritis were examined with a GIF-H180 Evis Exera-II apparatus (Olympus, Japan) coupled to the NBI system. The control group comprised 650 patients examined using conventional GIF-Q160 and GIF-Q160 Evis Exera-I fiberscopes (Olympus, Japan). Signs of inflammation, its severity and extent were evaluated. Significant correlation was revealed for the first time between inflammation of gastric mucosa, type of gastritis, endoscopic picture in the NBI regime, and results of histologic studies. Inflammation foci and sites of intestinal metaplasia were found to produce characteristic images in which they had different shades of lilac and deep blue respectively. Distribution of the stained foci corresponded to that of inflammation and/or metaplasia. It is concluded that the use of the NBI technology in routine oesophagogastroduodenoscopy improves diagnosis of intestinal metaplasia to 80-100% (p = 0.000).