Postoperative Radiotherapy Contributes to the Survival Benefit of Breast-Conserving Therapy over Mastectomy

Table 3

Patterns of the first recurrence in matched cohorts.

First recurrence	WBI		Mastectomy alone		WBI + RNI		PMRT
	N = 419	%	N = 419	%	N = 87	%	N = 87	%
LR	8	1.9	6	1.4	0	0	1	1.1
RR	5	1.2	10	2.4	0	0	2	2.3
Axillary	3	0.7	6	1.4	0	0	0	0
Supraclavicular	2	0.5	3	0.7	0	0	2	2.3
Internal mammary	0	0	1	0.2	0	0	0	0
CBC	7	1.7	10	2.4	0	0	0	0
DM	15	3.6	31	7.4	9	10.3	7	8
Bone	4	1.0	8	1.9	5	5.7	4	4.6
Liver/lung/brain	7	1.7	16	3.8	4	4.6	1	1.1
Distant nodes	3	0.7	5	1.2	0	0	2	2.3
Other sites	1	0.2	2	0.5	0	0	0	0

LR, local recurrence; RR, regional recurrence; CBC, contralateral breast cancer; DM, distant metastasis.