Tumor location | Number | Percentage |
Superior-outer quadrant | 118 | 53.9 |
Superior-internal quadrant | 41 | 18.7 |
Whenrant inferior-internal | 13 | 5.9 |
Inferior-outer quadrant | 20 | 9.1 |
Association | 27 | 12.3 |
Total | 219 | 100.0 |