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为探讨超声内镜（ＥＵＳ）在胃癌、食管癌术前诊断中的应用价值，对３６例胃癌、１５例食管癌术前进行ＥＵＳ检查，将其结果与术后病理对照。根据肿瘤新ＴＮＭ分期，ＥＵＳ对胃癌、食管癌术前Ｔ分期判断的准确率分别为８１％，８７％；对Ｎ分期判断的准确率分别为７２％，８０％。对胃癌、食管癌术前可切除性分期（Ｒ０）判断的准确率分别为９５％，９３％。提示ＥＵＳ能较准确地判断胃癌、食管癌的分期；能准确地判断早期癌，为早癌的内镜切除提供可靠的依据；对ＢｏｒｒｍａｎｎⅣ型癌的诊断也有重要意义。
To investigate the application value of endoscopic ultrasonography (EUS) in the preoperative diagnosis of gastric cancer and esophageal cancer, 36 cases of gastric cancer and 15 cases of esophageal cancer were examined by EUS before operation, and the results were compared with postoperative pathology. According to the new TNM staging of tumor, the accuracy rate of preoperative T staging for gastric cancer and esophageal cancer by EUS was 81% and 87%, respectively; the accuracy rate for N staging was 72% and 80%, respectively. The accuracy of preoperative resectable staging (R0) for gastric cancer and esophageal cancer was 95% and 93%, respectively. EUS can accurately determine the staging of gastric cancer and esophageal cancer. It can accurately determine early cancer and provide a reliable basis for endoscopic resection of early cancer. It also has important significance for the diagnosis of Borrmann type IV cancer.