Department of Gastroenterology the First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu 210000 ChinaThe First Clinical Medical College of Nanjing Medical University Nanjing Jiangsu 210000 China;
Department of Gastroenterology the First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu 210000 ChinaThe First Clinical Medical College of Nanjing Medical University Nanjing Jiangsu 210000 China;
Department of Gastroenterology the First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu 210000 ChinaThe First Clinical Medical College of Nanjing Medical University Nanjing Jiangsu 210000 China;
Department of Epidemiology Center for Global Health School of Public Health Nanjing Medical University Nanjing Jiangsu 211166 China;
superficial esophageal cancer; squamous cell carcinoma; lymph node metastasis; nomogram; prediction model;