Extensive changes in esophageal and esophagogastric junction cancer staging published in the 7th edition of the American Joint Committee on Cancer’s (AJCC) Cancer Staging Manual have been deemed an improvement over the previous staging system, based on a recent, retrospective comparison of nearly 400 patients staged using both the new and old systems.Definitive new staging criteria for esophageal cancer and amended criteria for staging other types of cancer were based on the results of numerous...