MJA
MJA

Radiation therapy and early breast cancer: current controversies

John Boyages
Med J Aust 2017; 207 (5): . || doi: 10.5694/mja16.01020
Published online: 4 September 2017

Summary

 

  • Radiation therapy (RT) is an important component of breast cancer treatment.
  • RT reduces local recurrence and breast cancer mortality after breast conservation for all patients and for node-positive patients after a mastectomy.
  • Short courses of RT over 3–4 weeks are generally as effective as longer courses.
  • A patient subgroup where RT can be avoided after conservative surgery has not been consistently identified.
  • A radiation boost reduces the risk of a recurrence in the breast but may be omitted for older patients with good prognosis tumours with clear margins.
  • Axillary recurrences can take a long time to appear, with 35% occurring after 5 years.
  • Leaving disease untreated in regional nodes is associated with reduced survival.
  • Not all patients require radiation after neoadjuvant chemotherapy and a subsequent mastectomy.
  • Modern RT equipment and techniques will further improve survival rates.

 

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