Recurrence and mortality according to Estrogen Receptor status for breast cancer patients undergoing conservative surgery. Ipsilateral breast tumour recurrence dynamics provides clues for tumour biology within the residual breast

Table 1 Main patient characteristics

	All	ERP	ERN
Total number	2825	1811	482
Age
≤ 45	972	551	184
46 - 55	992	643	179
56 - 65	631	453	89
>65	230	164	30
Menopausal status
Pre	1613	972	291
Post	1201	837	190
Unknown	11	3	1
Tumor size
≤ 2 cm	2428	1558	383
> 2 cm	397	253	99
Nodal status
N-	1745	1097	299
N + (1-3)	771	504	122
N + (>3)	309	210	61
Adjuvant therapy (for N + patients)
none	68	39	12
CMF ± Dx	790	513	145
Tamoxifen	153	120	17
Other	10	5
Unknown	59	37	9

ISSN: 1471-2407