When can a second conservative approach be considered for ipsilateral breast tumour recurrence?
BACKGROUND: Mastectomy is considered the treatment of choice in patients with ipsilateral breast tumour recurrence (IBTR) after breast-conserving surgery (BCS). PATIENTS AND METHODS: One hundred and sixty-one patients with invasive IBTR who underwent a second conservative approach were retrospectively evaluated in order to describe prognosis, determine predictive factors of outcome and select the subset of patients with the best local control. RESULTS: Fifty-seven patients (35.4%) relapsed after IBTR. Thirty-four patients (21.1%) had further in-breast recurrences and four patients (2.5%) had skin relapses. Five years cumulative incidence of local relapse was 31.4%. Twenty-four patients (17.8%, 5 years cumulative incidence) died during the follow-up. At the multivariate analysis, recurrent tumour size >2 cm was found to affect local-disease-free survival [hazard ratio (HR): 2.8, 95% confidence interval (CI) 1.2-6.2], whereas Ki-67 >or=20% and time to relapse 48 months, eight (12.8%, 5 years cumulative incidence) had further local relapses. CONCLUSIONS: Some patients with IBTR might receive a second BCS, especially when a good local control can be estimated (small recurrent tumour, late relapse), also taking into account patients' preference.