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胃癌是当今全球仅次于肺癌的第二大癌症[1],是恶性肿瘤致死的主要原因之一。胃癌的发生是多因素、多步骤的过程,有证据显示幽门螺杆菌(helicobacter pylori,Hp)感染是胃癌发展过程中重要的启动因素[2]。Hp作为胃癌发生的确切危险因素得到多项大规模前瞻性研究的证实[36～],国际
Gastric cancer is the world’s second largest cancer after lung cancer [1], which is one of the major causes of death from malignant tumors. The occurrence of gastric cancer is a multi-factor, multi-step process. There is evidence that helicobacter pylori (Hp) infection is an important initiating factor in the development of gastric cancer [2]. Hp as the exact risk factor for gastric cancer has been confirmed by a number of large-scale prospective studies [36 ~], International