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Axillary dissection in breast cancer revisited.

The pathological status of the axillary nodes remains the single most determining factor for survival, local recurrence and disease-free interval in operable breast cancer. Radical axillary dissection results in better local control with or without systemic disease in all operable cases. In pathologically negative cases, radical axillary dissection decreases local recurrence rates and perhaps prolongs disease-free survival. In pathologically positive cases, radical axillary dissection improves local control only. Radical axillary dissection avoids axillary irradiation and so decreases the risk and the importance of lymphoedema. Perfect axillary dissection does not show a decisive advantage over less complete axillary dissection when the 'quality' of surgery is measured by lymphoscintigraphy, but it should be kept in mind that only total control of the local situation can ensure a patient free of distal spread at the time of first therapy.