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Barrett食管(Barrett’s esophagus)是指食管下段的正常鳞状上皮被一种特殊肠化生的柱状上皮所取代的病理现象。传统Barrett食管定义中这种黏膜化生必须达到或超过3cm,而目前认为食管黏膜发生任何长度的肠化生均可定义为Barrett食管。这种特殊的肠化生可以一定模式(肠化生-不典
Barrett’s esophagus refers to the pathology in which the normal squamous epithelium in the lower esophagus is replaced by a special metaplasia of columnar epithelium. The mucosal metaplasia in traditional Barrett’s esophagus definition must be at or above 3 cm, and presently any length of metaplasia in the esophageal mucosa can be defined as the Barrett’s esophagus. This special intestinal metaplasia can be a certain pattern (intestinal metaplasia - atypical