| 年龄(岁) | 第一原发肿瘤 | 第二原发肿瘤 | 第三原发肿瘤 |
| 20~29 | 1 (1.82%) | 0 | 0 |
| 30~39 | 3 (5.45%) | 1 (1.82%) | 0 |
| 40~49 | 15 (27.27%) | 5 (9.1%) | 0 |
| 50~59 | 18 (32.73%) | 13 (23.64%) | 1 (16.67%) |
| 60~69 | 11 (20%) | 24 (43.64%) | 4 (66.67%) |
| 70~79 | 5 (9.1%) | 7 (12.73%) | 1 (16.67%) |
| >80 | 2 (3.64%) | 5 (9.1%) | 0 |
| 合计 | 55 | 55 | 6 |