胃癌是我国常见的消化道恶性肿瘤之一,其预后与确诊时的病理分期密切相关,早期胃癌(early gastric carcinoma,EGC)的预后明显好于中晚期胃癌[1]。然而,我国EGC的检出率较低,原因在于EGC多无症状或缺乏典型的临床表现,普查的依从性差,费用较高,发现时多已处于进展期。因此,提高我国胃 Gastric cancer is one of the most common malignant tumors of the digestive tract in China. Its prognosis is closely related to the pathological stage of the diagnosis. The prognosis of early gastric carcinoma (EGC) is significantly better than that of advanced gastric cancer [1]. However, the detection rate of EGC in our country is lower because of the asymptomatic or lack of typical clinical manifestations of EGC. The census has poor compliance and costs, and is found to be in advanced stage. Therefore, improve our stomach