ESTRO Multidisciplinary Management of Breast Cancer 2017

Large Danish Cohort (Bodilsen et al, 2016)

• 11 900 women treated with BCS

Margin status and IBTR

10

9

• Median FU 4.9 years

8

7

• Hazard ratio for a positive margin 2.51 but final positive margins very rare (<1% of population.

6

5

4

3

2

• Chemotherapy reduced risk by about half but small numbers preclude assessment according to margin status

1

0

IBTR

positive close negative