Patient characteristics
| Total number | 42 |
| Age, median (range) | 71.2 years (47–89) |
| Gender | |
| Male | 34 |
| Female | 8 |
| Grade | |
| G3 | 37 (88.1%) |
| Carcinoma in situ | 18 (42.8%) |
| Grade G3 + carcinoma in situ | 13 (30.9%) |
| Carcinoma in situ alone | 5 (11.9%) |
| Stage | |
| Ta | 12 (28.6%) |
| T1 | 24 (57.1%) |
| Lymphovascular invasion | 0 |
| Focality | |
| Single | 30 |
| Multiple | 12 |
| Follow-up time in months median (range) | 16 (15–33) |
| History of BCG vaccination | 24 (57.1%) |