我院自1982年7月至1985年9月用自制CEA测试盒对161例结直肠癌患者进行了CEA测定(直接法),其中72例进行了手术前后CEA监测(术前至少一次,术后初6月每月1～2次,以后每月一次,二年后二月一次)。观察到术后CEA下降至正常,以后又持续上升>20ng/ml,并随后经临床证实有复发者共24例(占33.3％)CEA升高较临床证实复发或转移平均能提前4.5月;24例中能再次手术切除者4例(16.6％),2例 In our hospital, from July 1982 to September 1985, CEA was performed on 161 patients with colorectal cancer using a self-made CEA test kit (direct method). Among them, 72 patients had undergone CEA before and after surgery (at least once before surgery, postoperatively. The first month of June is 1 or 2 times a month, then once a month, once every two years, and once in February.) CEA was observed to decline to normal after surgery, and then continued to rise >20 ng/ml, and subsequently 24 patients (33.3%) who had clinically confirmed recurrences had an increase in CEA compared with clinically confirmed recurrence or metastasis, which was 4.5 months earlier; 24 In the example, 4 cases (16.6%) were re-surgically removed, 2 cases