食道がん患者におけるリンパ節郭清範囲と生存成績に関する分析的コホート研究

The relationship between lymphadenectomy extent and survival among 138 esophageal cancer patients undergoing curative esophagectomy is of interest. Patients were grouped based on lymph node dissection: limited (<15 nodes), standard (15-29), and extended (≥30). Five-year survival improved with increasing nodal yield, especially in node-negative and early-stage patients. Multivariate analysis confirmed extended dissection as an independent predictor of better survival. These findings support a more extensive lymphadenectomy approach to optimize long-term oncologic outcomes.