| Stage | Frequency | Percentage |
| Benign | 77 | 79.3% |
| Malignant | 20 | 20.6% |
| Malignant stage I | 7 | 7.2% |
| Malignant stage II | 5 | 5.1% |
| Malignant stage III | 3 | 3.09% |
| Malignant stage IV | 5 | 5.1% |