Following imaging studies, esophageal cancer is staged according to the TNM system, where T means tumor size and local extension, N stands for lymph node metastases and M stands for distant metastases.

完成影像学检查后，食管癌要根据TNM系统进行分期：T代表肿瘤大小和邻近组织受累范围，N代表淋巴结转移，M代表远端转移。