A case of diffuse eosinophilic gastritis from a sixty nine years old man with peripheral eosinophilia and increased serum IgE was investigated by means of extended histotopographic approach on population density of eosinophilic infiltration. Localized muscular hypertrophy in the antral portion which corresponded to heavy eosinophilic infiltration with muscular damage resembled the localized from, but the rest of stomach was also the seat of diffuse eosinophilic infiltration, leading into the limited applicability of subtyping under this disease entity. Associated was a concomittant benign chronic peptic ulcer.