| Clinical forms | Population | Frequency (%) |
| Isolated |
|
|
| - Nodule | 85 | 81 |
| - Inflammatory | 12 | 11.4 |
| Associated with pregnancy |
|
|
| - Nodule | 4 | 3.8 |
| - Inflammatory | 2 | 1.9 |
| Bilateral | 2 | 1.9 |
| Total | 105 | 100 |