Detection of Lymph Node Involvement by Cytokeratin Immunohistochemistry is an Independent Prognostic Factor After Curative Resection of Esophageal Cancer

Background Involved lymph nodes (LN) are a negative prognostic factor in esophageal cancers. To assess the role of nodal micrometastases, we performed immunohistochemical analyses of LN after resection of node-negative esophageal cancers and correlated the results with survival.