Table 4 Risk factor analysis of IVR in 3 years after RNU
Variables | No IVR n = 38 (%) | IVR n = 16 (%) | p-value | |
|---|---|---|---|---|
Age (years) | ≥ 70 | 26 (68.4) | 7 (43.8) | 0.1280 |
Gender | Male | 29 (76.3) | 12 (75.0) | 1.0000 |
Laterality | Right | 18 (47.3) | 7 (43.8) | 1.0000 |
Location of main tumor | Ureter | 18 (47.3) | 8 (50.0) | 1.0000 |
Hydronephrosis | Yes | 11 (28.9) | 6 (37.5) | 0.5402 |
Urine cytology | Positive | 15 (39.5) | 12 (75.0) | 0.0352* |
Urinary BTA | Positive | 15 (39.5) | 9 (56.3) | 0.3695 |
Urinary NMP22 | Positive | 17 (44.7) | 8 (50.0) | 0.7718 |
Diagnostic ureteroscopic biopsy | Yes | 12 (31.6) | 8 (50.0) | 0.2301 |
Multifocality | Multiple | 3 (7.9) | 3 (18.8) | 0.3461 |
Tumor size (cm) | ≥ 3 | 16 (42.1) | 7 (43.8) | 1.0000 |
Pathological T stage | ≥ 3 | 11 (28.9) | 6 (37.5) | 0.5402 |
Grade | 3 | 16 (42.1) | 9 (56.3) | 0.3836 |
LVI | Positive | 7 (18.4) | 5 (31.3) | 0.3090 |
INF | b, c | 27 (71.1) | 13 (81.3) | 0.5155 |
Pneumoretroperitoneum time (min) | ≥ 210 | 16 (42.1) | 11 (68.8) | 0.1350 |
Total operating time (min) | ≥ 360 | 16 (42.1) | 10 (62.5) | 0.2358 |
ASC | Yes | 13 (34.2) | 5 (31.3) | 1.0000 |