Chronic Atrophic Gastritis (CAG) is a common disease in clinic. Because of its positive correlation with morbidity of gastric carcinoma, it was considered as a precancerous condition by World Health Organization (WHO).

• 慢性萎缩性胃炎(Chronic Atrophic Gastritis,CAG)是一种临床上常见的胃部疾患，由于其与胃癌尤其是肠型胃癌发生率呈显著正相关，WHO将其列为胃癌前期状态。