Purpose: To describe long-term failure pattern after early-stage breast cancer in relation to local treatment (breast-conserving therapy (BCT) or mastectomy) and age.
Materials And Methods: Cohort study with balanced 5-year age groups and prospectively collected data; 813 Danish lymph-node-negative breast cancer patients diagnosed in 1989-98 and treated with mastectomy (N=515) or BCT (N=298) and no adjuvant systemic treatment.
Results: The 20-year local recurrence (LR) risk was 20% after BCT; 8.