Table 2 Postoperative characteristics

Subtypes

 Clear cell

16

16

0.446

 Papillary

4

2

 Chromophobe

2

2

 Oncocytoma

0

2

Grade

 1

2

2

0.462

 2

14

9

 3

4

7

 Not applicable

2

4

Resection time (min, mean ± SD)

5.86 ± 2.17

4.55 ± 1.47

0.023

Renorrhaphy time (min, mean ± SD)

16.00 ± 3.75

14.73 ± 2.25

0.18

Estimated blood loss (ml, mean ± SD)

134.32 ± 70.11

70.23 ± 39.75

0.001

Drainage (ml, mean ± SD)

203.41 ± 124.17

145.46 ± 68.29

0.062

Operation time (min, mean ± SD)

75.00 ± 16.97

82.27 ± 16.10

0.152

Postoperative bed time (day, mean ± SD)

5.77 ± 1.19

5.68 ± 1.13

0.796

eGFR preoperation (ml/min/1.73 m², mean ± SD)

86.43 ± 19.92

90.66 ± 21.13

0.594

eGFR postoperation (ml/min/1.73 m², mean ± SD)

84.87 ± 21.72

84.21 ± 28.77

0.932

eGFR change (ml/min/1.73 m², mean ± SD)

−1.56 ± 4.70

−6.45 ± 3.83

<0.001

Hematuria

0

0

1.000

Postoperative hemorrhage

0

0

1.000

Blood transfusion

0

0

1.000

Urinary leakage

0

0

1.000

Clavien-Dindo classification of surgical complications

 Grades 1–2

22

22

1.000

 Grades 3–5

0

0