| 首发症状 | 例数(%) |
| 发现肾积水 | 35 (34%) |
| 尿路感染 | 26 (25%) |
| 排尿费力 | 8 (8%) |
| 尿滴沥 | 8 (8%) |
| 尿线细射程短 | 7 (7%) |
| 尿失禁 | 5 (5%) |
| 排尿中断 | 4 (4%) |
| 尿潴留 | 3 (3%) |
| 发现尿道开口异位 | 2 (2%) |
| 发现阴囊空虚 | 2 (2%) |
| 附睾炎 | 2 (2%) |