Objectives: The goal of the study was to examine the relationships among micrometastasis, pathological degree of differentiation and survival in patients with esophageal squamous cell carcinoma (SCC).
Design: A single-center retrospective study of patients diagnosed with thoracic esophageal SCC.
Methods: Immunostaining using CK13 was carried out for all lymph nodes resected by radical esophagectomy with three-field lymphadenectomy.