Barrett食管(Barrett’s esophagus,BE)是食管下段的复层鳞状上皮被单层柱状上皮替代的一种病理现象。其长度3cm称为长段BE(Long-segment BE,LSBE),3cm称短段BE(Short-segment BE,SSBE)。研究表明,食管腺癌多数是由BE发展而来,BE已被公认为是食管腺癌的癌前病变。本文就近年 Barrett’s esophagus (BE) is a pathological phenomenon in which the lower esophageal squamous epithelium is replaced by a single layer of columnar epithelium. The length of 3 cm is called Long-segment BE (LSBE) and 3 cm is Short-segment BE (SSBE). Studies have shown that the majority of esophageal adenocarcinoma developed from the BE, BE has been recognized as a precancerous lesion of esophageal adenocarcinoma. This article in recent years