色素内镜、超声内镜(EUS)、放大内镜、荧光内镜等技术在检出早期食管癌和食管癌前病变如Barrett食管、上皮不典型增生等方面显示出比常规内镜更高的敏感性和特异性,尤其超声内镜,对于判断食管原位癌、癌灶浸润深度以及局部淋巴结转移状况极具临床应用价值。同时,这些技术各自也存在不足之处。 Endoscopic, endoscopic ultrasonography (EUS), magnifying endoscopy, endoscopic fluoroscopy and other techniques in the detection of early esophageal cancer and esophageal precancerous lesions such as Barrett’s esophagus, epithelial dysplasia showed higher than conventional endoscopy Sensitivity and specificity, especially ultrasound endoscopy, for the determination of esophageal carcinoma in situ, depth of invasion of the tumor and local lymph node metastasis of great clinical value. At the same time, each of these technologies has its own weaknesses.