Neoadjuvant chemotherapy in breast cancer significantly reduces number of yielded lymph nodes by axillary dissection

Table 1 Patients and tumor characteristics

Characteristic	PCG		PSG		P value
	N	%	N	%
N	182		351
Mean age (range), y	49.82 (28–69)		60.33 (28–87)		< 0.0001
Mean tumor size, (range), mm	33.02 (0–100)		25.40 (2–89)		< 0.0001
Histology					0.219
Invasive ductal	151	82.9	270	76.9
Invasive lobular	21	11.5	60	17.0
Others	10	5.5	21	5.9
Tumor stage					<0.0001
T1	22	12.0	156	44.4
T2	116	63.7	157	44.7
T3	19	10.4	26	7.4
T4	25	13.7	12	3.4
Nodal status					<0.0001
pN0	82	45.1	54	15.4
pN1	63	34.6	189	53.8
pN2	37	20.3	108	30.8
Grading					0.0062
G1	6	3.3		9.9
G2	119	65.4	219	62.4
G3	57	31.3	97	27.6
Lymphovascular					<0.0001
invasion
L0	131	71.8	168	47.9
L1	51	28.0	183	52.1
Hormone receptor					0.004
status
ER positive	131	71.9	261	74.3
PR positive	96	52.7	225	64.1
Menopausal status					<0.0001
Premenopausal	78	42.6	92	26.2
Postmenopausal	104	57.1	259	73.8
Mastectomy					0.010
Yes	76	42.3	189	53.8
No	106	57.7	162	46.2
HER2neu status					0.003
Positive	47	25.8	53	15.0

ISSN: 1471-2407