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. 2021 Jul 19;11:14738. doi: 10.1038/s41598-021-94351-w

Table 2.

Clinicopathologic characteristics and chemotherapy of subgroups divided by type of surgery.

Characteristics BCS + Rad (n = 37) Mastectomy (n = 46) p-value
No % No %
Age at diagnosis (years)
Median 58 57
Range (IQR) 48–66 41–67
Gender 0.125
Female 37 100.00 42 91.30
Male 0 0.00 4 8.70
Laterality 0.840
Left 20 54.05 27 58.70
Right 17 45.95 19 41.30
Ethnicity 0.330
White 32 86.49 37 80.43
Black 2 5.41 7 15.22
Other 3 8.11 2 4.35
Pathologic tumor size 0.052
pT1 29 78.38 25 54.35
pT2 6 16.22 18 39.13
pT3 2 5.41 3 6.52
Nodal status 0.722
pN0 28 75.68 29 63.04
pN1 7 18.92 15 32.61
pN2 2 5.41 2 4.35
Nuclear grade 0.527
I 17 45.95 17 36.96
II 17 45.95 22 47.83
III 3 8.11 7 15.22
ER status 0.729
Positive 24 64.86 27 58.70
Negative 13 35.14 19 41.30
PR status 0.420
Positive 17 45.95 16 34.78
Negative 20 54.05 30 65.22
Chemotherapy 0.998
Yes 17 45.95 20 43.48
No/unknown 20 54.05 26 56.52

pT1 pathological tumor size ≤ 2 cm, pT2 2 cm < pathological tumor size ≤ 5 cm, pT3 pathological tumor size > 5 cm, pN0 negative regional lymph node, pN1, 1 to 3 regional lymph node metastasis, pN2 4 to 9 regional lymph node metastasis, Nuclear grade I well differentiation, Nuclear grade II moderate differentiation, Nuclear grade III poor differentiation, ER estrogen receptor, PR progesterone receptor, BCS breast conserving surgery.