胃癌是常见恶性肿瘤之一,约占消化道癌瘤之半,其病发率有逐年增高的趋向。由于早期阶段临床症征不明显,且缺乏特征性,极易误诊,据估计胃癌病人自起病至就医,平均多已耽阁达半年之久。故有些病人在手术时已失去根治机会。据多数文献报告,手术五年生存率仅15%左右。但早期胃 Gastric cancer is one of the most common malignancies, accounting for about half of the digestive tract cancers, and its incidence has increased year by year. Because the clinical symptoms in the early stage are not obvious and the characteristics are lacking, it is easy to misdiagnose. It is estimated that gastric cancer patients have been on the average for more than half a year since they started to seek treatment. Therefore, some patients have lost the chance of radical treatment during surgery. According to most reports, the five-year survival rate for surgery is only about 15%. But early stomach