Conclusion: For ESCC patients (stage T3-4, any N, M0) undergone esophagectomy, postoperative radiotherapy with small field had similar survival outcome (OS and PFS) with large field radiation. However, patients received small field radiation had much more locoregional recurrence and worse LPFS than patients with large field radiation. A large field postoperative radiotherapy may improve the locoregional control rate for ESCC patients.
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