胃肠道肿瘤的发病率目前仍然位于肿瘤中的第一位,其中食管癌、胃癌的发病率仍居高不下,而结直肠癌的发生率在明显上升〔1〕。由于对中晚期肿瘤的治疗尚无明显突破,而随着分子技术和消化内镜技术的不断进步,使得对胃肠道肿瘤的早期诊治成为可能。因此重视和提高对胃肠道癌前病变 The incidence of gastrointestinal cancer is still located in the first tumor, of which esophageal cancer, the incidence of gastric cancer is still high, and the incidence of colorectal cancer was significantly increased [1]. As the treatment of advanced cancer no significant breakthrough, but with the molecular technology and digestive endoscopy technology continues to progress, making the early diagnosis and treatment of gastrointestinal cancer possible. So pay attention to and improve the gastrointestinal precancerous lesions