直肠、结肠癌为消化系外科常见多发肿瘤，近几年来发病率有明显增长之趋势。客观上该病无特异的临床表现，不易与其他良性疾病相鉴别；主观上加之医生及病人对此病重视认识不足，忽视～些必要的、基本的检查。造成误诊误治，延误病情。早期诊断，手术根治．是提高5年治愈率的关 The rectum and colon cancer are common multiple tumors in the digestive system. In recent years, the incidence rate has obviously increased. Objectively, there is no specific clinical manifestation of the disease and it is not easy to distinguish it from other benign diseases. Subjectively, doctors and patients attach insufficient importance to this disease and neglect some necessary and basic examinations. Cause misdiagnosis and mistreatment, and delay the illness. Early diagnosis, surgical cure. It is to increase the cure rate for 5 years