胃肠癌是一大类常见的恶性肿瘤。其中胃癌在我国癌症新发病人数中占第二位,在西方发达国家则占第四位,而大肠癌的发病率和死亡率在欧美等国均为第三位,在我国大城市中大肠癌的发病率也已居第三位,死亡率则在恶性肿瘤中占第五位。 近20年来,尽管外科手术技术的进一步提高,但这两种肿瘤单纯手术后的生存率并没有得到明显地提 Gastrointestinal cancer is a large class of common malignancies. Among them, gastric cancer accounts for the second largest number of new cancers in China, and fourth in western developed countries. The incidence and mortality of colorectal cancer are third in Europe and the United States, and in large cities in China. The incidence rate has also been ranked third, and the mortality rate is the fifth among malignant tumors. In the past 20 years, although the surgical technique has been further improved, the survival rate of these two tumors after simple surgery has not been clearly mentioned.