• M Ahmed, I T Rubio, T Kovacs, V S Klimberg, and M Douek.
• Research Oncology, Division of Cancer Studies, King's College London, London, UK.
• Br J Surg. 2016 Feb 1; 103 (3): 170-8.

BackgroundAxillary reverse mapping (ARM) assesses the lymphatic drainage of the arm simultaneously with that of the breast, enabling preservation of arm lymphatics during axillary surgery for breast cancer. This article systematically reviews the evidence on the lymphoedema rate and oncological safety of the ARM technique.MethodsPubMed, Embase and the Cochrane Library were searched systematically for studies that addressed the use of ARM during axillary surgery in breast cancer. Studies were eligible if they performed ARM during sentinel node biopsy (SNB) or axillary node clearance (ANC) for breast cancer in prospective studies of more than 50 patients, with assessment of lymphoedema and oncological outcomes during a minimum follow-up of 6 months.ResultsEight studies reported data on ARM in 1142 patients undergoing axillary surgery for breast cancer. Lymphoedema rates ranged from 0 to 6 per cent during ARM-assisted SNB, and from 5.9 to 24 per cent during ARM lymphatic preservation at ANC. Crossover nodes between the arm and breast lymphatics were identified in 0-10 per cent of patients, and metastases were present in 0-20 per cent of these patients. ARM nodes were not preserved in between 11 and 18 per cent of patients with ARM nodes identified, and metastases were detected in 0-19 per cent of these patients.ConclusionARM can achieve low rates of lymphoedema, but the risk of metastasis in crossover and clinically suspicious ARM nodes, or those in close proximity to an involved sentinel node, warrants their excision.© 2015 BJS Society Ltd Published by John Wiley & Sons Ltd.

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