CEACAM7 and gastritis: Positivity for CEACAM7 expression in low grade GINs was significantly higher than for chronic atrophic gastritis (P = 0.032), and CEACAM7 was more frequently expressed in atrophic chronic gastritis than in normal gastric mucosa (P = 0.012), but there was no significant difference in CEACAM7 expression between low-grade GIN and high-grade GIN (P = 0.982).