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The SOUND randomized clinical trial asked whether sentinel lymph-node biopsy could be omitted altogether in women with small, clinically node-negative breast cancers when preoperative axillary ultrasonography showed no suspicious nodes. The study found that omission of axillary surgery was associated with excellent distant disease-free outcomes and did not compromise the broader treatment strategy in appropriately selected patients. This is an important step in surgical de-escalation because even sentinel-node biopsy is an invasive procedure with potential morbidity, although much less than full axillary dissection. The practical lesson for breast surgeons is that staging procedures should be proportional to the clinical question they need to answer. In carefully selected patients receiving modern breast cancer therapy, imaging and tumor characteristics may allow the axilla to be left untouched. The findings do not apply to every patient with breast cancer; tumor size, nodal imaging, biology and planned systemic or radiation treatment remain central to selection. SOUND therefore supports individualized, risk-adapted surgical planning.
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The SOUND randomized clinical trial asked whether sentinel lymph-node biopsy could be omitted altogether in women with small, clinically node-negative breast cancers when preoperative axillary ultrasonography showed no suspicious nodes. The study found that omission of axillary surgery was associated with excellent distant disease-free outcomes and did not compromise the broader treatment strategy in appropriately selected patients. This is an important step in surgical de-escalation because even sentinel-node biopsy is an invasive procedure with potential morbidity, although much less than full axillary dissection. The practical lesson for breast surgeons is that staging procedures should be proportional to the clinical question they need to answer. In carefully selected patients receiving modern breast cancer therapy, imaging and tumor characteristics may allow the axilla to be left untouched. The findings do not apply to every patient with breast cancer; tumor size, nodal imaging, biology and planned systemic or radiation treatment remain central to selection. SOUND therefore supports individualized, risk-adapted surgical planning.
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