Comparison of the 6th and 7th Editions of the American Joint Committee on Cancer Tumor-Node-Metastasis Staging System in Patients With Resected Esophageal Carcinoma

The strength of the 7th edition AJCC TNM staging system is the new descriptors for “N” and “M” classifications. However, we did not find histologic grade and cancer location to be significant prognostic factors in our cohort. Overall, the 7th edition AJCC TNM staging system has better performance than the previous edition.