食管癌是世界上第6种最常见的恶性肿瘤,其发病因地区而异。在亚洲的伊朗、阿富汗、蒙古和我国西北部、非洲东南部和法国的西北部发病率可高达50～100/100万/年,且以鳞癌为主;北美和西欧发病率低,2～8/10万,而且腺癌所占比例于70年代起明显增多,占30%～40%[1]。今就其内镜治疗的 Esophageal cancer is the sixth most common malignancy in the world, and its onset varies from region to region. In Iran, Afghanistan, Mongolia and northwestern China, southeastern Africa and the northwestern part of France, the incidence rate can be as high as 50 to 100/100 million per year, and squamous cell carcinoma is predominant; the incidence in North America and Western Europe is low, 2~ 8/10 million, and the proportion of adenocarcinoma increased significantly from the 1970s, accounting for 30% to 40% [1]. Now for its endoscopic treatment