胃癌是人体的常见病,据国内资料统计,发病率逐渐上升,占消化道肿瘤的第一位,有的地区已达全部恶性肿瘤的首位。病因多与环境因素、饮食习惯、遗传因素、肌体免疫状况、癌前期疾病密切相关。具体说来,土壤含锌、铜较高的地区发病率高,被污染的食物及腌制鱼、肉、蔬菜中含有可引发胃癌的亚硝胺类化合物,而熏制品、油炸食物中含多环芳烃,食物发霉产生的细菌,也有致癌性。就临床表现来说,胃癌早期缺乏特有的症状,一般伴有无规律性剧烈腹痛及食欲 Gastric cancer is a common disease in the human body. According to domestic statistics, the incidence rate has gradually increased, accounting for the first place in the digestive tract tumors, and some areas have reached the top of all malignant tumors. The etiology is closely related to environmental factors, dietary habits, genetic factors, body immune status, and precancerous conditions. Specifically, soils with high levels of zinc and copper have a high incidence. Contaminated foods and preserved fish, meat, and vegetables contain nitrosamines that cause gastric cancer, while smoked and fried foods contain Polycyclic aromatic hydrocarbons, bacteria produced by food mold, but also carcinogenic. As far as clinical performance is concerned, early gastric cancer lacks specific symptoms and is generally accompanied by irregular abdominal pain and appetite.