Radiotherapy of the regional lymph nodes: shooting at the sheriff?

The Breast : Official Journal of the European Society of Mastology
I Kunkler

Abstract

The role of immune surveillance in controlling the spread of breast cancer to the regional nodes is poorly understood. In theory regional nodal irradiation (RNI) might compromise this host function. However the clinical evidence suggests that the risk of regional recurrence is lower in patients with early breast cancer whose axilla has been irradiated compared to no axillary treatment. The role of RNI after breast conserving surgery has not been well studied. A policy of level III clearance and only irradiating the axilla for residual disease and a selective policy of axillary irradiation in node positive patients after sentinel node biopsy or lower axillary node sample is recommended. Irradiation of the medial supraclavicular fossa after axillary dissection is suggested where there are four or more nodes involved on axillary dissection. There is little data to inform selection of patients for RNI after neoadjuvant systemic therapy. The role of postmastectomy radiotherapy (PMRT) was largely established on the basis of comprehensive RNI. It is unclear whether irradiating less than the chest wall and peripheral lymphatics confers the same level of benefit. The role of PMRT in women with 1-3 involved nodes remains controversial an...Continue Reading

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