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作者对14例钡餐和常规食管镜诊断为食管外压或食管粘膜下肿瘤的病人,采用日本东芝公司生产的实时电子聚焦转换器与马自达公司生产改装的食管镜匹配行内窥镜超声(EUS)检查。为了描绘食管壁层,作者进行了下列基础研究。将墨汁注射到食管壁的全层,超声检查浸泡在无空气水中切除后的新鲜标本。然后将标本进行病理学检查。超声和病理研究的结果表明二者间有良好的相关关系。超声所见的第1强回声和第2低回声层相当于食管的粘膜、第3强回声层相当于粘膜下;第4至第6层相当固有肌层,而第5层相当固有肌层的环型肌和纵行肌间的结缔组织,第7强回声层相当外膜。然而,上述这些层在临床上并不总是出现。就5层结
The author of the 14 cases of barium meal and conventional esophageal diagnosis of esophageal external pressure or submucosal tumor patients, using the Toshiba Corporation’s real-time electronic focus converter and Mazda’s modified esophagoscope mirror line endoscopic ultrasound (EUS) examination . In order to delineate the esophageal wall, the author conducted the following basic research. The ink was injected into the full layer of the esophageal wall and ultrasound was performed to examine fresh specimens immersed in airless water. The specimens were then examined pathologically. The results of ultrasound and pathology studies showed a good correlation between the two. The first strong echo and the second hypoechoic layer seen by ultrasound correspond to the mucosa of the esophagus and the third strong echo layer corresponds to the submucosal; the fourth to sixth layers are quite specialized muscular layers, while the fifth layer is quite muscular in nature. The connective tissue between the circular and longitudinal muscles, and the seventh strong echo layer is quite adventitia. However, these layers do not always appear clinically. Five layers