label: Stage I Breast Cancer AJCC v7
label_lc: stage i breast cancer ajcc v7
description: Stage I includes: IA: T1, N0, M0 and IB: (T0, N1mi, M0); (T1, N1mi, M0).  T1: Tumor 20 mm or less in greatest dimension.  T1 includes T1mi. T1mi: Tumor 1 mm or less in greatest dimension.  T0: No evidence of primary tumor.  N0: No regional lymph node metastasis.  N1mi: Nodal micrometastases.  M0: No clinical or radiographic evidence of distant metastasis.  M0 includes M0(i+).  (AJCC 7th Ed.)