中文摘要：

目的：探讨异黏蛋白（MTDH）和细胞周期蛋白D1（cyclinD1）在食管鳞状细胞癌（ESCC）组织中的表达及其临床意义。方法采用免疫组织化学法检测78例ESCC组织中MTDH和cyclinD1的表达。结果 MTDH和cyclinD1在ESCC组织中表达的阳性率分别为71.79%（56／78）、74.36%（58／78）。 MTDH和cyclinD1的表达与ESCC分化程度、淋巴结转移有关（均P＜0.05），而与患者年龄、性别、浸润深度无关（均P〉0.05）。结论 MTDH和cyclinD1蛋白的高表达可能参与了食管癌的发生、发展，在食管癌的侵袭和转移过程中发挥重要作用。

英文摘要：

Objective To study the expressions of metadherin （MTDH） and cyclinD1 in esophageal squamous cell carcinoma （ESCC） and their clinical significances. Methods The protein expressions of MTDH and cyclinD1 were detected by immunohistochemistry in 78 cases of ESCC. Results The positive expression rate of MTDH in ESCC was 71.79%（56/78） and the positive expression rate of cyclinD1 in ESCC was 74.36%（58/78）. The expressions of MTDH and cyclinD1 were significantly correlated with the degree of differentiation and lymph node metastasis （both P〈 0.05）, but not with the age, gender of patients and depth of tumor invasion （all P〉 0.05）. Conclusion The over expressions of MTDH and cyclinD1 protein may involve in the occurrence and development of esophageal carcinoma, which play important roles in the invasion and metastasis of esophageal cancer.