论文部分内容阅读
在我国随着人民生活水平提高及饮食西方化,结直肠癌发病率逐年增加,恶性肿瘤中上升到第四位,男性则处于第二位[1]。结肠上皮细胞从异常增生经腺瘤阶段发展到癌变平均需10年时间,这为早期筛查及预防提供了充分时间,但由于结直肠癌早期多无症状,待出现症状大多已是中晚期,因此早
In our country, with the improvement of people’s living standard and westernization of diet, the incidence of colorectal cancer has been increasing year by year, the number of malignant tumors has risen to the fourth place, and the number of men has the second place [1]. Colorectal epithelial cells from the abnormal proliferation of adenoma through the development stage to cancer on average 10 years, which provides early screening and prevention of adequate time, but as early as many colorectal symptoms, to be most of the symptoms are late, So early