Stage IB Breast Cancer AJCC v7

**Semantic type:** Neoplastic Process

**Definition:** Stage IB includes: (T0, N1mi, M0); (T1, N1mi, M0). T0: No evidence of primary tumor. T1: Tumor 20 mm or less in greatest dimension. T1 includes T1mi. T1mi: Tumor 1 mm or less in greatest dimension. N1mi: Nodal micrometastases. M0: No clinical or radiographic evidence of distant metastasis. M0 includes M0(i+). (AJCC 7th Ed.)

**Synonyms:** - Stage IB Breast Cancer - Stage IB Breast Cancer - stage IB breast cancer