1807 / 1816
EBCTCG and SEER
Radiotherapy versus not
6
EBCTCG:
~3000 women, N+ disease in 14 trials of
radiotherapy after mastectomy
SEER:
~33,000 women with radiotherapy after
mastectomy
~56,000 pN+ women with mastectomy but
no radiotherapy
McGale et al, JCO 2016; 34:3356