Endoscopic Kyoto classification of Helicobacter pylori infection and gastric cancer risk diagnosis

Figure 1 Kimura-Takemoto classification of endoscopic atrophy. Atrophic borders are indicated by a dotted line. A: C1 (Atrophy is limited to the antrum); B: C2 (Atrophy is limited to the minor area of the lesser curvature of the body); C: C3 (Atrophy exists in the major area of the lesser curvature of the body but does not extend beyond the cardia); D: O1 (Atrophy extends to the fundus over the cardia. Atrophic border of the body lies between the lesser curvature and anterior wall); E: O2 (Atrophic border of the body lies on the anterior wall); F: O3 (Atrophy is widespread with the border between the anterior wall and greater curvature).

Figure 2 Endoscopic findings of Kyoto classification. A: Intestinal metaplasia; B: Map-like redness; C: Enlarged folds; D: Nodularity; E: Diffuse redness; F: Regular arrangement of collecting venules in weakly magnified image.