Table 1. Patient Demographics and Tumour Characteristics.
| Characteristic | N | % |
|---|---|---|
| Patients | 52 | |
| Axillae analysed | 56 | |
| Bilateral findings | 4 | |
| Age in years | 54.9 | (28–82) b |
| Total Number of Invasive Cancers | 54 | 96.4 [54/56] |
| Tumour Pathological T Classification | ||
| T1 | 28 | 56.0 [28/54] |
| T2 | 21 | 42.0 [21/54] |
| T3 | 3 | 6.0 [3/54] |
| T4 | 2 | 4.0 [2/54] |
| Tumour N Classification a | ||
| N0 | 23 | 42.6 [23/54] |
| N1 | 12 | 25.9 [14/54] |
| N1 (mi) | 3 | 3.7 [2/54] |
| N2 | 12 | 22.2 12/54] |
| N3 | 3 | 5.6 [3/54] |
| Stage | ||
| 1 | 18 | 33.3 [18/54] |
| 2 | 21 | 38.9 [21/54] |
| 3 | 14 | 25.9 [14/54] |
| 4 | 1 | 1.9 [1/54] |
| Tumour histology | ||
| Ductal | 41 | 73.2 [41/54] |
| Lobular | 9 | 16.1 [9/54] |
| Tubulolobular | 3 | 5.4 [3/54] |
| Mucinous | 1 | 1.7 [1/54] |
| Ductal carcinoma in situ | 2 | 3.6 [2/54] |
| Grade of invasive cancer | ||
| 1 | 11 | 20.4 [11/54] |
| 2 | 29 | 53.7 [29/54] |
| 3 | 16 | 29.6 [16/54] |
| Total number of LNs analysed | 121 | |
| Ipsilateral (lowest) | 56 | 46.3 [56/121] |
| Ipsilateral (other) | 32 | 26.4 [32/121] |
| Contralateral | 33 | 27.3 [33/121] |
| Number of axillae with macrometastases | 29 | 51.8 [29/56] |
| Size of macrometastases (mm) | 14.1 | (2–35) b |
| Length LN1 (mm) | 16.7 | (6–35) b |
| Thickness LN1 (mm) | 8.6 | (3–21) b |
| Cortical thickness (mm) | 4.9 | (1–21) b |
a TNM classification according to American Joint Committee on Cancer.
b Data in parenthesis are range.