大肠癌为常见的恶性肿瘤,据流行病学、病因学的研究表明:随着经济的发展,人民饮食水平的提高,发病率亦随之上升(14年间升高近一倍)。近年来,国内大肠癌的防治水平虽有明显提高,但发展还是不平衡的,尤其是基层医院的诊治水平极待提高。一、基础理论研究:癌胚抗原(CEA)的提纯、放射免疫分析及其临床应用,研究结果与国外报道相一致,对判断预后、疗效观察、转移或复发的监测和病变良恶性鉴别的辅助指标均有意义。体外测定肿瘤 Colorectal cancer is a common malignancy. According to epidemiological and etiological studies, as the economy develops, people’s dietary levels increase, and the incidence rate also increases (almost double in 14 years). In recent years, although the prevention and treatment of colorectal cancer in China has significantly improved, but the development is still unbalanced, especially the level of diagnosis and treatment of grass-roots hospitals to be extremely improved. First, basic theoretical research: Carcinoembryonic antigen (CEA) purification, radioimmunoassay and its clinical application, the research results are consistent with foreign reports, to determine the prognosis, efficacy observation, metastasis or recurrence monitoring and differential diagnosis of benign and malignant lesions The indicators are all meaningful. In vitro determination of tumors