| Number of Patients | 1660 Women |
| Mean Age | 57 years old |
| Major Incidence Range | 50 to 63 years old |
| Palpable Tumor | 53% of cases |
| Single Tumor | 89% of cases |
| Location | 34.96% upper outer quadrant |
| 16.20% upper quadrant union | |
| 11.44% upper inner quadrant | |
| 10.38% outer quadrant union | |
| 9.19% inner quadrant union | |
| 8.38% areolar | |
| 5.13% lower outer quadrant | |
| 4.32% lower inner quadrant | |
| Histology | 70.4% infiltrative ducal carcinoma |
| 11.87% intraductal in situ carcinoma | |
| 5.86% infiltrative intraductal carcinoma | |
| 5.73% lobulillar carcinoma | |
| 8.14% others | |
| Size | 1.82 cm (SD 0.98; range 0.2 - 8.1 cm) |
| Vascular or Linfatic Infiltration | 28% of cases |
| Positive Hormone Receptors | 83% of cases |
| Positive Erb2 | 30% of cases |
| Tracer Injection | 59.81% intratumoral |
| 31.57% intratumoral + subdermal | |
| 6.44% peritumoral | |
| 2.19% subareolar | |
| Number of Nodes Biopsied | 1.44 (SD 0.69) |
| Number of Metastatic Sentinel Nodes | 0.3 (SD 0.56) |
| Nodal Location | 1.364 axillary (82.2%) |
| 267 axillary and non-axillary (16.1%) | |
| 29 extra-axillary (1.7%) | |
| Surgical Treatment | 86.45% tumorectomy |
| 13.55% mastectomy | |
| Axillary Lymph Node Dissection | 24% of cases |
| Metastatic Nodes | 0.87 (SD 2.15; range 0 - 21) |