Table 1.

Characteristics of patients according to the final axillary status

Variable	Negative nodes	Positive nodes	p-value
Number of cases	n = 130	n = 111
Age (range)	61.0 (31–88)	58.3 (27–88)	0.081
Tumor size (T)
1a	1 (0.8%)	1 (0.9%)	0.111
1b	19 (14.6%)	5 (4.5%)
1c	57 (43.8%)	59 (53.2%)
2	46 (35.4%)	39 (35.1%)
3	2 (1.5%)	0 (0%)
4b	4 (3.1%)	3 (2.7%)
Missing	1 (0.8%)	4 (3.6%)
Clinical lymph nodes
N0	110 (84.6%)	65 (58.6%)	< .001
N1	17 (13.1%)	40 (36%)
N2	1 (0.8%)	6 (5.4%)
Missing	2 (1.5%)	0 (0%)
Ultrasound
Normal	103 (79.2%)	45 (40.5%)	< .001
Suspicious	27 (20.8%)	66 (59.5%)
Tumor grade
1	40 (30.8%)	28 (25.2%)	0.601
2	70 (53.8%)	64 (57.7%)
3	17 (13.1%)	17 (15.3%)
Missing	3 (2.3%)	2 (1.8%)
Estrogen receptor
Negative	23 (17.7%)	12 (10.8%)	0.184
Positive	107 (82.3%)	99 (89.2%)
Progesterone receptor
Negative	42 (32.3%)	35 (31.5%)	1
Positive	88 (67.7%)	76 (68.5%)
HER 2
Negative	111 (85.4%)	98 (88.3%)	0.637
Positive	19 (14.6%)	13 (11.7%)
Ki 67
Negative	41 (31.5%)	39 (35.1%)	0.54
Positive	78 (60%)	60 (54.1%)
Missing	11 (8.5%)	12 (10.8%)
Surgery
Mastectomy	49 (37.7%)	48 (43.2%)	0.457
Tumorectomy	81 (62.3%)	63 (56.8%)