Chronic Atrophic Gastritis (CAG) is one of the common gastrointestinal symptom disease,the common refractory digestive disease in clinics and important pathologic change of gastric cancer.

• 慢性萎缩性胃炎是临床常见的老年病和难治病之一,病势缠绵,病程较长,若失治误治易发生癌变。