Table 1.
Clinical characteristics of women with non-metastatic triple-negative breast cancer at the Sultan Qaboos University Hospital, Muscat, Oman (N = 79)
| Characteristic | n (%) |
|---|---|
| Age in years | |
| <40 | 25 (31.6) |
| 40–60 | 46 (58.2) |
| >60 | 8 (10.1) |
| Median (range) | 46 (19–74) |
| Menstrual status | |
| Premenopausal | 52 (65.8) |
| Menopausal | 27 (34.2) |
| Family history of breast cancer | |
| Yes | 5 (6.3) |
| No | 66 (83.5) |
| Unknown | 8 (10.1) |
| Affected side | |
| Left | 38 (48.1) |
| Right | 41 (51.9) |
| Clinical tumour size | |
| Tx | 1 (1.3) |
| T1 | 6 (7.6) |
| T2 | 33 (41.8) |
| T3 | 23 (29.1) |
| T4 | 15 (19) |
| Inflammatory breast cancer | 1 (1.3) |
| Clinical node status | |
| N0 | 41 (51.9) |
| N1 | 26 (32.9) |
| N2 | 11 (13.9) |
| N3 | 1 (1.3) |
| Clinical stage at presentation | |
| I | 5 (6.3) |
| II | 41 (51.9) |
| III | 33 (41.8) |
Tx = tumour size could not be ascertained; T1 = tumour of ≤2 cm; T2 = tumour of 2.1–5 cm; T3 = tumour of >5 cm; T4 = tumour of any size invading the chest wall, breast skin (ulceration or macroscopic nodules) or inflammatory carcinoma; N0 = absence of nodal involvement; N1 = metastasis to the ipsilateral axillary lymph nodes that are mobile; N2 = metastasis to the ipsilateral axillary lymph nodes that are fixed; N3 = metastasis to the ipsilateral infra-clavicular lymph nodes with or without axillary lymph nodes.