大肠癌早期症状隐匿,且病情发展缓慢,大部分患者发现时多为晚期,严重影响了人们的生活质量,因此,早期预防、早期诊断、早期治疗已成为当前研治大肠癌的重点。大肠癌是一个多因素,相互作用并且多阶段发生发展的疾病,大约1/3患者具有遗传背景,难以从单一病因进行干预阻断,大肠癌的发病过程可从粘膜上皮异型增生至腺瘤至癌变,发展到浸润癌,由于大肠癌变前的几个阶段,是 The early symptoms of colorectal cancer are insidious, and the disease progresses slowly. Most of the patients were found late, which seriously affected people’s quality of life. Therefore, early prevention, early diagnosis, and early treatment have become the focus of current research on colorectal cancer. Colorectal cancer is a multi-factor, interactive and multi-stage development and disease. About one-third of patients have a genetic background and it is difficult to block from a single cause. The pathogenesis of colorectal cancer can range from epithelial dysplasia to adenoma. Carcinogenesis, progression to invasive cancer, due to several stages of colorectal cancer before it is