Factors Associated with the Incidence of Local Recurrences of Breast Cancer in Women Who Underwent Conservative Surgery

Table 1

Sociodemographic and clinical characterisation of women with recurrent breast cancer who underwent breast-conserving surgery and were enrolled in the HSRC during the period from January 1, 2000 to December 31, 2010.

Variable	Category	= 60	%
Age group	30 to 39 years	13	22%
	40 to 49 years	21	35%
	50 to 59 years	16	27%
	60 to 69 years	9	15%
	80 or more	1	2%
Race/ethnicity	White	14	23%
	Nonwhite	46	77%
Location of primary tumour	Nipple	2	5%
	Upper inner quadrant	8	21%
	Lower inner quadrant	5	13%
	Upper outer quadrant	22	58%
	Lower outer quadrant	1	3%
Histological type	Others	1	2%
	Ductal and mixed carcinoma	54	90%
	Lobular carcinoma	5	8%
Stage	Initial	56	93%
	Late	4	7%
First postsurgery treatment	RT	22	36.7%
	CT	36	60.0%
	Hormone	2	3.3%
	None	0	0%
Laterality	Right	32	53%
	Left	28	47%
Size in cm	0.5 or less	3	5%
	0.6 to 1.0	6	10%
	1.1 to 1.5	5	8%
	1.6 to 2.0	16	27%
	>2.0	29	49%
Vascular and/or lymph invasion	No	45	76%
	Yes	14	24%
Surgical margin involvement	Negative	48	80%
	Positive	12	20%
Number of axillary lymph nodes involved	0	39	70%
	1–3	12	21%
	>3	5	9%
Sentinel lymph node detection technique	Dye	23	88%
	Radiopharmaceutical	2	8%
	Both	1	4%
Estrogen receptor	Negative	17	29%
	Positive	41	71%
Progesterone receptor	Negative	18	31%
	Positive	40	69%
Her-2	Negative	35	65%
	Positive	19	35%
p53	Negative	31	69%
	Positive	14	31%

RT: radiotherapy, CT: chemotherapy.