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Page 4 of 10 Mari et al. Mini-invasive Surg 2024;8:7 https://dx.doi.org/10.20517/2574-1225.2023.103

Table 1. Preoperative characteristics of 1,611 patients treated with partial nephrectomy for RCC
Preoperative characteristics (n = 1,611)
Gender ● Male 1,120 69.5%
● Female 491 30.5%
Age (years) 62.6 54.7-72.0
2
BMI (kg/m ) 26.9 23.9-28.8
EcoG score ● ≥ 1 299 18,6%
ASA PS ● ≥ 3 340 21.1%
CCI PS score 1 0-2
AA-CCI PS score 3 2-5
Surgical indication ● Elective 1,458 90.5%
● Relative 207 12.8%
● Imperative 54 3.4%
Tumor side n. % ● Right 811 51.4%
● Left 800 48.6%
Clinical T n. % ● T1a 1,485 71.5%
● T1b 539 26.0%
● T2 52 2.5%
Tumor growth pattern ● ≥ 50% exophytic 829 51.5%
● < 50% exophytic 641 39.8%
● Entirely endophytic 141 8.8%
Tumor location relative to the PL ● Entirely above PL 790 49.0%
● ≤ 50% crosses PL 584 36.3%
● > 50% crosses PL 237 14.7%
Nearingness to the collecting system ● ≥ 7 mm 875 54.3%
● > 4 but < 7 mm 317 19.7%
● ≤ 4 mm 419 26.0%
Hilar tumor, n. % 171 10.6%
PADUA score, median IQR 8.0 7.0-9.0
PADUA score complexity index ● 6-7 776 48.2%
● 8-9 561 34.8%
● ≥ 10 274 17%
Baseline hemoglobin (mg/dL), median (IQR) 14.3 13.3-15.2
Baseline creatinine (mg/dL), median (IQR) 0.9 0.8-1.1
Baseline eGFR (mL/min), median IQR 84.6 69.5-100.4
RCC: Renal cell carcinoma; BMI: Body Mass Index; EcoG: Eastern Cooperative Oncology Group; ASA PS: American Society of Anesthesiologists
physical status; CCI PS: Charlson Comorbidity Index physical status; PL: polar line; PADUA: preoperative aspects and dimensions used for an
anatomical; IQR: interquartile ranges; eGFR: estimated glomerular filtration rate.

The BMI had a median of 26.9 kg/m (IQR: 23.9-28.8), and 299 (18.6%) patients had an Eastern Cooperative
2
Oncology Group (ECOG) score ≥ 1. American Society of Anesthesiologists physical status (ASA PS) score
≥ 3 was noted in 340 (21.1%) of the patients. The median CCI was 1 (IQR: 0-2), while the median age-
adjusted CCI performance status (AA-CCI PS) score was 3 (IQR: 2-5). Regarding surgical indication, 1,458
(90,5%) were elective, 207 (12.8%) were relative, and 54 (3.4%) were imperative. For the tumor side, 811
(51.4%) were on the right and 800 (48.6%) were on the left.

The PADUA score median was 8.0 (IQR: 7.0-9.5). Baseline hemoglobin, creatinine, and estimated
glomerular filtration rate (eGFR) were 13.9 mg/dL (IQR: 13.3-15.2), 0.9 mg/dL (IQR: 0.8-1.1), and
84.6 mL/min (IQR: 69.5-100.4), respectively.