| Age(years) | Benigh tumors | Malignant tumors | Total | ||
| Male | Female | Male | Female | ||
| 20 - 29 | 1 | 3 | 0 | 0 | 4 |
| 30 - 39 | 0 | 1 | 0 | 0 | 1 |
| 40 - 49 | 3 | 3 | 1 | 1 | 8 |
| 50 - 59 | 0 | 2 | 1 | 0 | 3 |
| 60 - 69 | 2 | 3 | 1 | 4 | 10 |
| 70 - 79 | 1 | 5 | 0 | 1 | 7 |
| 80 - 89 | 0 | 2 | 0 | 1 | 3 |
| 90 - 99 | 0 | 1 | 0 | 0 | 1 |
| Total | 7 | 20 | 3 | 7 | 37 |