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The need for adjuvant therapy after radical resection for patients with stage II-III thoracic esophageal squamous cell carcinoma (TESCC) who have undergone neoadjuvant chemotherapy (NAC) has not been determined. Since recurrence can occur after radical resection and since the prognosis is still poor, it is necessary to consider additional treatment strategies, including adjuvant chemotherapy. We retrospectively investigated the significance of adjuvant therapy after NAC followed by radical resection for TESCC. Between 2008 and 2018, 115 patients with clinical stage II-III underwent radical subtotal esophagectomy after neoadjuvant therapy. Among them, 62 were analyzed, excluding patients with T4 tumors and patients who had undergone R plus resection or who were receiving preoperative chemoradiotherapy. We compared patients who received adjuvant chemotherapy with those who only received observation; we examined overall survival (OS) and recurrence rates. Twenty-nine patients (46.7%) had lymph node metastasis, 12 of whom received adjuvant chemotherapy (41.3%). The recurrence rates for patients with and without lymph node metastasis were 55.1 % and 15.1%, respectively ( p = 0.0022). Among patients with lymph node metastasis, there was no significant difference in the recurrence rate ( p = 0.9270) or OS ( p = 0.5416) based on the administration of adjuvant chemotherapy. However, in 15 patients with two or more positive lymph nodes, adjuvant chemotherapy increased OS ( p = 0.0404). Adjuvant chemotherapy was associated with improved OS in clinical stage II-III TESCC patients with two or more pathological positive lymph nodes after NAC followed by radical surgery.

indian journal of surgical oncology

The Role of Adjuvant Chemotherapy for Esophageal Squamous Cell Carcinoma Patients with Pathological Positive Lymph Nodes After Neoadjuvant Chemotherapy Followed by Esophagectomy: a Single Institute Retrospective Analysis