Characteristics of Lymph Node Recurrence After Radical Surgery and Their Value in Target Volume Delineation in Postoperative Radiation Therapy for Thoracic Esophageal Squamous Cell Carcinoma

cervical lymph node metastasis; mediastinal lymph node recurrence was associated with T stage and N stage; abdominal lymph node recurrence was associated with primary tumor location and preoperative abdominal lymph node metastasis; distant recurrence was associated with venous invasion. Patients with risk factors above were suggested to perform postoperative adjuvant therapy. Author Disclosure: J. Li: A. Employee; Fujian Cancer Hospital.