The 7th edition of the American Joint Committee on Cancer (AJCC) TNM (tumor-node-metastasis) staging system published in 2010 developed new classifications of stages II and III tumors following the recommendations of the Hindgut Taskforce.1,2 As noted by the authors, the tumors are evaluated about depth of tumor invasion (T), nodal involvement (N), and distant metastases (M). Stage 0 tumors are T0 or Tis, N0 and M0. Stage I is T1 or T2, N0, M0. Stage II is T3 or T4, N0, M0. Stage III is Any T stage, N1 or N2, and M0. Stage IV is Any T stage, Any N stage, and M1. Stages II and III can be subdivided and these subdivisions were modified in the 7th edition based on the Surveillance, Epidemiology, and End Results (SEER) and the National Cancer Data Base (NCDB) data. Traditionally stage II was divided into IIA and IIB, T3, N0, M0, and T4, N0, M0, respectively. Stage III was separated into three stages: IIIA (T1 or T2, N1, M1); IIIB (T3 or T4, N1, M0); and IIIC (Any T, N2, M0). T4bN0 is associated with poorer survival and is now classified as IIC (previously IIB). In contrast, the following three tumors appear to have somewhat better survivals upgrading their classifications to IIIB, T1 or T2, N2a, T1 or T2, N2b and T3, N2a. Finally, T4b, N1a and T4b, NIb are IIIC (previously IIIB). These reclassifications are important for prognostication and treatment planning.