|
| Enrolled (n) | Percentage (%) |
| Obstructive urolithiasis | 27 | 34.2 |
| Abdominal-pelvic tumour | 17 | 21.5 |
| SJPU | 12 | 15.2 |
| Urethral stricture | 9 | 11.4 |
| UHN viewed without obstacle | 8 | 10.1 |
| Retroperitoneal fibrosis | 3 | 3.8 |
| Others | 3 | 3.8 |
| Total | 79 | 100 |