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长期以来,胃癌一直是全球发病率和病死率最高的恶性肿瘤之一。由于日本的早期胃癌研究较为成功,日本胃癌总的5年生存率为40%～60%,居世界之首;其他国家约为20%[1]。中国每年死于胃癌的患者约22.7万,占所有恶性肿瘤死亡患者的23%,而患者的早期胃癌诊断率不足1/10,早期胃癌手术率仅为5%～10%[2]。因此,提高我国早期胃癌检出水平刻不容缓。由于胃癌诊断主要取决于胃镜及活组织病理检查,因此提高我国胃镜检查中对胃癌的识别能力至关重要。
Gastric cancer has long been one of the most malignant tumors with the highest morbidity and mortality in the world. Due to the success of early gastric cancer research in Japan, the overall 5-year survival rate of gastric cancer in Japan is 40% -60%, ranking first in the world; in other countries it is about 20% [1]. About 227,000 people die of gastric cancer each year in China, accounting for 23% of all cancer deaths, compared with less than 10% for early gastric cancer and 5% to 10% for early gastric cancer. Therefore, to improve the detection of early gastric cancer in our country without delay. As the diagnosis of gastric cancer mainly depends on endoscopy and biopsy, it is very important to improve the ability of gastric cancer in our endoscopy.