Effect of Cervical Paraesophageal Lymph Node Metastasis Versus Supraclavicular Lymph Node Metastasis on the Overall Survival of Patients With Thoracic Esophageal Squamous Cell Carcinoma: An Observational Study

The goal of this observational study is to learn about in health conditions of ESCC. The main question\[s\] it aims to answer are: •Lymph node metastasis(LNM) in cervical paraesophageal or supraclavicular which influence OS more. Participants will describe the main status quo after surgery Researchers will compare Lymph node metastasis(LNM) in cervical paraesophageal and supraclavicular to see if dead.