Table 3.
General characteristics of patients by sentinel lymph node tumor (categorical data).
| Features of patients | Sentinel lymph node involvement | P | ||
|---|---|---|---|---|
| Absent (n, %) | Present (n, %) | |||
| Age | <65 | 199, 55.4% | 160, 44.6% | .398 |
| ≥65 | 52, 60.5% | 34, 39.5% | ||
| Breast density* | A | 42, 53.2% | 37, 46.8% | .617 |
| B | 99, 60.4% | 65, 39.6% | ||
| C | 88, 55.0% | 72, 45.0% | ||
| D | 22, 52.4% | 20, 47.6% | ||
| Quadrant location of the tumor | Central | 8, 66.7% | 4, 33.3% | .195 |
| Upper inner | 40, 70.2% | 17, 29.8% | ||
| Upper outer | 154, 54.2% | 130, 45.8% | ||
| Lower inner | 17, 50.0% | 17, 50% | ||
| Lower outer | 32, 55.2% | 26, 44.8% | ||
| Physical examination | Non-palpable | 91, 79.8% | 23, 20.2% | <.001 * |
| Palpable | 160, 48.3% | 171, 51.7% | ||
| Microcalcification | Absent | 222, 81.9% | 49, 18.1% | <.001 * |
| Present | 29, 16.7% | 145, 83.3% | ||
| Multifocality/multicentrity | Absent | 210, 66.7% | 105, 33.3% | <.001 * |
| Present | 41, 31.5% | 89, 68.5% | ||
| Axillary ultrasonographic findings | Normal finding | 214, 62.9% | 126, 37.1% | <.001 * |
| Thick cortex | 37, 35.2% | 68, 64.8% | ||
*
Breast density; category A = almost entirely fat; category B = scattered fibroglandular densities; category C = heterogeneously dense; and category D = extremely dense.
* P < .05.