本研究选取202例EGJ区肿瘤，其中35例有食管切缘癌残留，将无痛残留作为对照组。研究结果显示，食道癌残留与食道梗阻症状、癌细胞分化程度、TNM分期、浸润胃的范围有显著关系。该区癌向食管下浸润主要沿粘膜下层进行是主要特征，病理上癌侵及范围常超过术中触诊的范围。确定安全切缘是防止癌残留的关键。 In this study, 202 cases of EGJ tumors were selected, of which 35 cases had residual margins of esophageal margins and painless residuals served as controls. The results of the study showed that there was a significant relationship between esophageal cancer residuals and esophageal obstruction symptoms, cancer cell differentiation, TNM staging, and infiltration of the stomach. The infiltration of cancer into the esophagus in this area is mainly along the submucosa. The pathological cancer invasion often exceeds the range of intraoperative palpation. Determining safety margins is the key to preventing cancerous residues.