Pre-operation

Characteristic Cystoscopy, N = 121 Heminephrectomy, N = 331 Ureteroureterostomy, N = 141 p-value2
Gender


0.050
    Female 11 / 12 (92%) 21 / 33 (64%) 13 / 14 (93%)
    Male 1 / 12 (8.3%) 12 / 33 (36%) 1 / 14 (7.1%)
Age (months) 20.9 (± 38.3) 18.6 (± 30.1) 22.2 (± 31.4) 0.5
Pre-operative Renal Scan


0.027
    Bilateral Duplex System 0 / 12 (0%) 3 / 33 (9.1%) 1 / 14 (7.1%)
    UIV 3 / 12 (25%) 0 / 33 (0%) 0 / 14 (0%)
    Unilateral System 9 / 12 (75%) 30 / 33 (91%) 13 / 14 (93%)
Operated Kidney Side


0.5
    Left 6 / 12 (50%) 22 / 32 (69%) 10 / 14 (71%)
    Right 6 / 12 (50%) 10 / 32 (31%) 4 / 14 (29%)
Pre-operative Upper Pole Renal Function (%) 16.9 (± 4.3) 8.6 (± 7.2) 15.9 (± 6.3) 0.001
Renal Pelvis Diameter (mm) 20.9 (± 13.9) 25.1 (± 14.6) 17.9 (± 9.1) 0.2
Pre-operative Diameter of Ureterocele (mm) 17.2 (± 10.4) 17.1 (± 9.4) 13.3 (± 8.4) 0.3
Follow up time (months) 44.9 (± 11.2) 48.6 (± 13.0) 41.9 (± 12.5) 0.3
1 n / N (%); Mean (± SD)
2 Fisher’s exact test; Kruskal-Wallis rank sum test

First checkup

Characteristic Cystoscopy, N = 111 Heminephrectomy, N = 251 Ureteroureterostomy, N = 111 p-value2
Time of First Check up (months) 1.4 (± 0.8) 1.2 (± 0.8) 1.4 (± 0.9) 0.7
Ureterocele in first checkup after operation


0.2
    Detectable 3 / 5 (60%) 5 / 25 (20%) 2 / 7 (29%)
    Undetectable 2 / 5 (40%) 20 / 25 (80%) 5 / 7 (71%)
Ureterocele diameter in first checkup after operation (mm) 16.0 (± 1.7) 17.2 (± 7.5) 11.0 (± 8.5) 0.4
1 Mean (± SD); n / N (%)
2 Kruskal-Wallis rank sum test; Fisher’s exact test

Second checkup

Characteristic Cystoscopy, N = 61 Heminephrectomy, N = 171 Ureteroureterostomy, N = 111 p-value2
Time of Second Check up (months) 4.5 (± 3.2) 6.0 (± 3.5) 4.7 (± 2.8) 0.4
Ureterocele in second checkup after operation


0.5
    Detectable 2 / 2 (100%) 5 / 5 (100%) 3 / 4 (75%)
    Undetectable 0 / 2 (0%) 0 / 5 (0%) 1 / 4 (25%)
Ureterocele diameter in second checkup after operation (mm) 15.0 (± 7.1) 10.8 (± 4.2) 11.0 (± NA) 0.8
1 Mean (± SD); n / N (%)
2 Kruskal-Wallis rank sum test; Fisher’s exact test

Most recent checkup

Characteristic Cystoscopy, N = 101 Heminephrectomy, N = 281 Ureteroureterostomy, N = 111 p-value2
Time of most recent checkup (in months) 15.6 (± 11.5) 17.0 (± 18.4) 18.9 (± 7.5) 0.4
Ureterocele presents after surgery


0.5
    Detectable 3 / 10 (30%) 7 / 28 (25%) 1 / 11 (9.1%)
    Undetectable 7 / 10 (70%) 21 / 28 (75%) 10 / 11 (91%)
Upper pole Renal pelvis diameter 9.1 (± 5.1) 12.0 (± NA) 8.7 (± 4.0) 0.7
Ureter diameter 5.0 (± 2.1) 8.0 (± NA) 4.6 (± 1.3) 0.2
Ureterocele diameter 16.7 (± 1.5) 16.6 (± 9.2) 10.0 (± NA) 0.7
Postoperative upper pole function (%) 21.0 (± 4.4) NA (± NA) 18.6 (± 1.9) 0.6
1 Mean (± SD); n / N (%)
2 Kruskal-Wallis rank sum test; Fisher’s exact test

Plot descriptive