Abstract

Salvage esophagectomy, indicated for some patients with locally recurrent/persistent disease after definitive chemoradiotherapy (dCRT), reportedly has high postoperative complications. This study aims to compare the safety and efficacy of dCRT followed by salvage esophagectomy (DCRE) with planned esophagectomy after neoadjuvant chemoradiotherapy (NCRE) in esophageal squamous cell carcinoma (ESCC). We retrospectively reviewed all locally advanced ESCC patients treated with DCRE or NCRE at Shanghai Chest Hospital from 2018 to 2021. Propensity score matching (PSM) was used to balance baseline differences. DCRE is defined as esophagectomy for recurrent/persistent disease after dCRT. A total of 302 patients (41 for DCRE and 261 for NCRE) were included. The median interval of chemoradiotherapy-to-surgery was 47d in NCRE, 43d and 440d in DCRE of persistent disease (n = 24) and recurrence (n = 17), respectively. DCRE was observed with advanced ypT stage (63% vs 38%), poorer differentiation (32% vs 15%) and more lymphovascular invasion (29% vs 11%) compared with NCRE (all p < 0.05). The above factors were comparable between the two groups after PSM (all p > 0.05). There were no significant differences before and after PSM in postoperative complications over Clavien-Dindo grade III (e.g., respiratory failure and anastomotic leak), 30/90-day postoperative mortality, and survival. Through a standardized surgical procedure in a high-volume center, DCRE exhibited comparable postoperative complications and prognosis with NCRE.

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