Table 1.
Clinicopathologic characteristics of 460 nipple-sparing mastectomy procedures
| N = 460 | |
|---|---|
| Age, year | 48.3 ± 9.1 |
| < 40 | 75 (16.3) |
| ≧ 40, < 60 | 329 (71.5) |
| ≧ 60 | 56 (12.2) |
| Location | |
| Left | 221 (48.1) |
| Right | 239 (51.9) |
| BMI (body mass index) | 23.7 ± 3.7 |
| < 18 | 19 (4.1) |
| 18–24 | 271 (58.9) |
| > 24 | 170 (37.0) |
| Surgical methods | |
| Conventional NSM | 174 (37.8) |
| Endoscopic-assisted NSM | 195 (42.4) |
| Robotic-assisted NSM | 91 (19.8) |
| Specimen size, g (NA = 48) | 327.1 ± 184.5 |
| < 180 | 66 (16.01) |
| 180–320 | 173 (41.99) |
| 320–450 | 93 (22.57) |
| > 450 | 80 (19.41) |
| Surgical ALN staging method (NA = 46) | |
| SLNB | 298 (71.9) |
| SLNB + ALND | 85 (20.6) |
| ALND | 31 (7.5) |
| Tumor size, cm (NA = 87) | 2.5 ± 2.2 |
| ALN metastasis on pathology (NA = 44) | |
| N0 | 290 (69.7) |
| N1 | 96 (23.1) |
| N2 | 24 (5.8) |
| N3 | 6 (1.4) |
| Stage (NA = 64) | |
| 0 | 87 (21.9) |
| I | 107 (27.1) |
| II | 157 (39.7) |
| III | 44 (11.1) |
| IV | 1 (0.2) |
| ER (NA = 76) | |
| Positive | 320 (83.3) |
| Negative | 64 (16.7) |
| PR (NA = 78) | |
| Positive | 270 (70.7) |
| Negative | 112 (29.3) |
| HER-2 (NA = 131) | |
| Positive | 80 (24.3) |
| Negative | 249 (75.7) |
| Ki-67 (NA = 189) | |
| ≦ 14 | 139 (51.3) |
| > 14 | 132 (48.7) |
| Pathology (NA = 3) | |
| DCIS | 94 (20.6) |
| IDC | 261 (57.1) |
| ILC | 16 (3.5) |
| LCIS | 3 (0.6) |
| Other | 83 (18.2) |
| Operation time | 224.2 ± 124.3 |
| Reconstruction | |
| Yes | 383 (83.3) |
| No | 77 (16.7) |
| Complication | |
| Yes | 102 (22.2) |
| No | 358 (77.8) |
| Chemotherapy (NA = 31) | |
| Yes | 174 (40.6) |
| No | 255 (59.4) |
| Radiotherapy (NA = 31) | |
| Yes | 116 (27.1) |
| No | 313 (72.9) |
| Recurrence | |
| Yes | 37 (8) |
| No | 423 (92) |
| Metastasis | |
| Yes | 30 (6.5) |
| No | 430 (93.5) |
| Follow-up time (time since surgery) month | 42.4 ± 32.5 |
BMI body mass index, ALN axillary lymph node, SLNB sentinel lymph node biopsy, ALND axillary lymph node dissection, NSM nipple-sparing mastectomy. ★IDC, IDC, IDC + ILC, IDC + LCIS, IDC + DCIS < 10%, IDC + DCIS (IDC + DCIS = IDC + DCIS, IDC + DCIS + LCIS). ★ILC, ILC, ILC + LCIS, ILC + DCIS. ★other, other cancer