Table 1 Characteristics of 324 patients included in this study
|  | No ipsilateral LTR (n = 316) | Ipsilateral LTR (n = 8) | P value |
|---|---|---|---|
Age | 0.52 | ||
  < 50 years | 114 | 2 | |
  ≥ 50 years | 202 | 6 | |
Histopathology | 0.38 | ||
 DCIS | 51 | 0 | |
 IDC | 227 | 8 | |
 ILC | 9 | 0 | |
 Others | 29 | 0 | |
TNM stage | 0.57 | ||
 Stage 0 | 53 | 0 | |
 Stage I | 133 | 4 | |
 Stage II | 108 | 3 | |
 Stage III | 19 | 1 | |
Tumor subtype | 0.03 | ||
 LumA/B | 241 | 3 | |
 HER2 | 36 | 3 | |
 Triple negative | 39 | 2 | |
Ki-67 | 0.50 | ||
 Low (< 14%) | 100 | 1 | |
 High (≥14%) | 216 | 7 | |
HG | 0.19 | ||
 Gr1 | 57 | 0 | |
 Gr2 | 119 | 3 | |
 Gr3 | 68 | 4 | |
 N/A | 72 | 1 | |
NG | 0.71 | ||
 Gr1 | 27 | 0 | |
 Gr2 | 129 | 3 | |
 Gr3 | 142 | 4 | |
 N/A | 18 | 1 | |
LI | 0.61 | ||
 (+) | 63 | 2 | |
 (−) | 196 | 6 | |
 N/A | 57 | 0 | |
PNI | 0.39 | ||
 (+) | 24 | 1 | |
 (−) | 233 | 7 | |
 N/A | 57 | 0 | |
VI | 0.39 | ||
 (+) | 3 | 0 | |
 (−) | 256 | 8 | |
 N/A | 57 | 0 | |
Nodal status | 0.42 | ||
  (+) | 79 | 3 | |
  (−) | 237 | 5 | |
NAC | 0.10 | ||
 (+) | 50 | 3 | |
 (−) | 266 | 5 | |
Adjuvant CTx | 0.64 | ||
 (+) | 212 | 6 | |
 (−) | 104 | 2 | |