From: The importance of margins status after breast conservative surgery and radiotherapy in node positive patients: a follow-up of 10–15 years
Margins -ve
Margins +ve
P value
N (461)
415
46
LR (at 10 years)
50 (12%)
13 (28%)
p < 0.001 *
10 years survival
83%
61%
*statistically significant