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Detection of Lymph Node Micrometastases in Gastric Carcinoma by Immunohistochemical and RT-PCR Methods
Author(s): XIAO Weidong, WANG Menglong, ZOU Yeqing, ZHANG Wenchang, LEI Ying, CHENG Hua
Pages: 1-
3,11
Year: 2002
Issue:
4
Journal: ACTA ACADEMIAE MEDICINAE JIANGXI
Keyword: 胃癌; 淋巴结; 微转移; CEA; RT-PCR; 免疫组织化学;
Abstract: 目的:应用免疫组化方法和RT-PCR方法检测常规病理检查淋巴结阴性胃癌之淋巴结微转移,比较两种检测方法的敏感性同时探讨检测胃癌淋巴结微转移的临床意义.方法:采用CEA单克隆抗体免疫组织化学方法和CEA mRNA RT-PCR方法分别检测11例常规病理检查淋巴结阴性胃癌的205枚淋巴结.结果:CEA单克隆抗体免疫组织化学法检出18枚(8.8%)微转移淋巴结,而CEA mRNA RT-PCR法共检出46枚(22.4%)微转移淋巴结,两者比较差异显著(P<0.01).11例患者中有6例存在淋巴结微转移,此6例患者的重新TNM分期均有所上升.随访中发现有2例微转移阳性患者分别于根治术后第6、9个月出现复发.结论:应用CEA单克隆抗体免疫组织化学方法或CEA mRNA RT-PCR法可以检测出常规病理检查遗漏的胃癌淋巴结微转移灶.而且RT-PCR法检测胃癌淋巴结微转移较免疫组织化学法更为敏感.检测常规病理检查淋巴结阴性胃癌的淋巴结微转移,有助于临床准确分期,判断预后及指导治疗.
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