胃癌的发病情况胃癌是发生于胃黏膜上皮细胞的恶性肿瘤。全球每年约有90万新发胃癌患者,是全世界排名第4的癌症。同时,每年有70万人死于胃癌,其病死率在所有癌症中排名第2位。胃癌的高发地区包括日本、中国、韩国、南美洲和东欧国家,在北美、澳大利亚和新西兰、北欧和印度的发病率较低。我国每年新发胃癌患者达40万人,死亡人数达30 The incidence of gastric cancer Gastric cancer is a malignant tumor that occurs in gastric mucosal epithelial cells. About 900,000 new cases of gastric cancer occur each year in the world, ranking fourth in the world. At the same time, 700,000 people die of gastric cancer each year, and its mortality rate ranks second in all cancers. The high incidence areas of gastric cancer include Japan, China, South Korea, South America and Eastern European countries, with low incidence in North America, Australia and New Zealand, Northern Europe and India. China has 400,000 new cases of gastric cancer every year, and the death toll reaches 30