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食管上段胃黏膜异位症（ HGMUE）是指在颈段食管出现异位的岛状胃黏膜斑块，多数患者无特殊临床症状，仅在行内镜检查时被发现。内镜技术逐渐应用于HGMUE 的诊断中，极大地提高了检出率。 HGMUE通常无需治疗，仅在出现症状及相关并发症时予以选择性治疗，除抑酸剂等药物治疗外，内镜治疗技术亦不断发挥显著作用。该文主要就内镜技术在HGMUE 诊断与治疗中的研究进展予以综述。“,”Heterotopic gastric mucosa in the upper esophagus is an island of ectopic gastric mucosa that is found in the proximal esophagus.Most patients are asymptomatic and found only in endoscopy .Endoscopic technique are gradually applied in the diagnosis of heterotopic gastric mucosa in the upper esophagus ,which greatly improve the detection rate.In addition to the drugs,such as antacid,are applied in the treatment of heterotopic gastric mucosa in the upper esophagus and related complications ,the endoscopic treatment tech-nologies were also play significant roles.The advance of endoscopic diagnosis and treatment of heterotopic gastric mucosa in the upper esophagus are reviewed in this paper .