| Tumor location | Effective | Percentage |
| Supero-outer quadrant Supero-inner quadrant Infero-outer quadrant | 41 10 4 | 47.1 11.5 4.6 |
| Inner lower quadrant | 5 | 5.8 |
| Outer and inner supero quadrant | 7 | 8 |
| Outer and inner lower quadrant | 4 | 4.6 |
| Retro areolar | 7 | 8 |
| whole breast | 9 | 10.3 |
| Total | 87 | 100 |