Table 1. Characteristics of the primary cancer in patients with isolated invasive chest wall recurrences.
| Clinical features of primary cancer | N=22, n (%) |
|---|---|
| Age (years) | |
| <50 | 12 (54.5) |
| ≥50 | 10 (45.5) |
| Reconstruction | |
| Yes | 13 (59.1) |
| No | 9 (40.9) |
| Axillary surgery | |
| Sentinel lymph node biopsy | 16 (72.7) |
| Axillary lymph node dissection | 6 (27.3) |
| Tumour histology | |
| Invasive ductal | 17 (77.3) |
| Invasive lobular | 2 (9.1) |
| Others1 | 3 (13.6) |
| Pathological features | |
| Invasive tumour size (mm)2 | |
| ≤20 | 6 (27.3) |
| >20 to ≤50 | 12 (54.6) |
| >50 | 2 (9.1) |
| Not available | 1 (4.5) |
| Not applicable3 | 1 (4.5) |
| Grade of invasive cancer | |
| I | 3 (13.7) |
| II | 13 (59.1) |
| III | 5 (22.7) |
| Not applicable3 | 1 (4.5) |
| ER of invasive cancer | |
| Positive | 19 (86.4) |
| Negative | 2 (9.1) |
| Not applicable3 | 1 (4.5) |
| PR of invasive cancer | |
| Positive | 18 (81.9) |
| Negative | 3 (13.6) |
| Not applicable3 | 1 (4.5) |
| HER24 | |
| Positive | 1 (4.8) |
| Negative | 20 (95.2) |
| Stage | |
| pN0 | 16 (72.7) |
| pN1 | 5 (22.7) |
| pN2 | 1 (4.6) |
| Chemotherapy4 | |
| Yes | 8 (38.1) |
| No | 13 (61.9) |
| Radiotherapy | |
| Yes | 3 (13.6) |
| No | 19 (86.4) |
| Hormonal therapy | |
| Yes | 18 (81.8) |
| No | 4 (18.2) |
| Targeted HER2 therapy4 | |
| Yes | 0 (0) |
| No | 21 (100.0) |
1, mucinous and DCIS subtype; 2, if multifocal/centric disease was present, the size measurement will be based on the largest lesion; 3, DCIS; 4, invasive cancer only. ER, estrogen receptor; PR, progesterone receptor; DCIS, ductal carcinoma in situ; HER2, human epidermal growth factor receptor 2.