由于中国人生活方式和饮食习惯的改变等原因,大肠癌的发病率也呈逐年上升趋势。目前普遍认同大肠腺瘤是大肠上皮从良性向恶性演变的重要环节,也是最具恶变潜能的癌前状态。国内外学者对大肠腺瘤进行着广泛而深入地研究。近年来大肠锯齿状腺瘤(serrated adenoma,简称锯齿状腺瘤) Due to changes in Chinese lifestyle and eating habits, the incidence of colorectal cancer has also been increasing year by year. It is generally accepted that colorectal adenoma is an important part of the epithelium of the large intestine evolving from benign to malignant and also the most malignant potential precancerous condition. Domestic and foreign scholars conduct extensive and in-depth research on colorectal adenoma. In recent years, serrated adenoma (serrated adenoma, referred to as serrated adenoma)