1. Sentinel Lymph Node Biopsy Versus Axillary Dissection in Node-Negative Early-Stage Breast Cancer: 15-Year Follow-Up Update of a Randomized Clinical Trial
- Author
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Giuseppe Canavese, Federico Lacopo, Stefano Spinaci, Beatrice Dozin, Elsa Garrone, Corrado Tinterri, Daniela Tomei, Paolo Bruzzi, Franca Carli, and A. Catturich
- Subjects
Adult ,medicine.medical_specialty ,Sentinel lymph node ,Breast Neoplasms ,Metastasis ,law.invention ,03 medical and health sciences ,0302 clinical medicine ,Breast cancer ,Randomized controlled trial ,law ,medicine ,Humans ,030212 general & internal medicine ,Stage (cooking) ,Survival rate ,Aged ,Neoplasm Staging ,Sentinel Lymph Node Biopsy ,business.industry ,Axillary Lymph Node Dissection ,Middle Aged ,medicine.disease ,Surgery ,Survival Rate ,Axilla ,medicine.anatomical_structure ,Oncology ,030220 oncology & carcinogenesis ,Lymph Node Excision ,Female ,Neoplasm Recurrence, Local ,business ,Follow-Up Studies - Abstract
Sentinel lymph node biopsy (SLNB) allows for staging of the axillary node status in early-stage breast cancer (BC) patients and avoiding complete axillary lymph node dissection (ALND) when the sentinel lymph node (SLN) is proven to be free of disease. In a previous randomized trial we compared SLNB followed by ALND (ALND arm) with SLNB followed by ALND only if the SLN presented metastasis (SLNB arm). At a mid-term of ≈ 6 years median follow-up, the two strategies appeared to ensure similar survival and locoregional control. We have revised these previous findings and update the results following a 15-year observation period. Patients were randomly assigned to either the ALND or SLNB arm. The main endpoints were event-free survival (EFS), overall survival (OS), and axillary disease recurrence. EFS and OS were assessed using Kaplan–Meier analysis and the log-rank test. The ALND and SLNB arms included 115 and 110 patients, respectively. At 14.3 years median follow-up, 39 primary BC-related recurrences occurred, 22 (19 %) of which occurred in the ALND arm and 17 (16 %) occurred in the SLNB arm (p = 0.519). No axillary relapse developed in the SLNB arm, while two were observed in the ALND arm. OS (82.0 vs. 78.8 %) and EFS (72.8 vs. 72.9 %) were not statistically different between the ALND and SLNB arms (p = 0.502 and 0.953, respectively). SLNB is a safe and efficacious component of the surgical treatment of early-stage BC patients. In the long-term, SLNB is equivalent to ALND in terms of locoregional nodal disease control and survival in this subset of patients.
- Published
- 2016
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