Table 2.
Local treatments by age group
| Age group | ≤64 | (%) | 65–74 | (%) | ≥75 | (%) | P-value |
|---|---|---|---|---|---|---|---|
| Breast surgery | |||||||
| none | 1 | (0.1) | 1 | (0.3) | 0 | (0.0) | <0.001 |
| BCS | 805 | (56.6) | 217 | (58.3) | 112 | (49.3) | |
| Mastectomy | 617 | (43.3) | 154 | (41.4) | 115 | (50.7) | |
| with reconstruction | 160/617 | 1/154 | 0/115 | ||||
| Under local anesthesia | 2 | (0.1) | 3 | (0.8) | 20 | (8.2) | <0.001 |
| Axillary surgery | |||||||
| none | 9 | (0.6) | 4 | (1.1) | 21 | (9.3) | <0.001 |
| SNB | 686 | (48.2) | 188 | (50.5) | 106 | (46.7) | |
| SNB-Ax | 121 | (8.5) | 31 | (8.3) | 15 | (6.6) | |
| Ax | 607 | (42.7) | 149 | (40.1) | 85 | (37.4) | |
| Radiotherapy | |||||||
| for BCS | 722 | (93.1) | 184 | (86.8) | 32 | (29.1) | <0.001 |
| for Mastectomy | 117 | (20.6) | 18 | (12.5) | 11 | (10.1) | <0.001 |
BCS: breast conserving surgery, SNB: sentinel lymph node biopsy, Ax: axillary dissection