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Table 4 Renal mass complexity according to newly modified score in relation to outcome parameters

From: Modified R.E.N.A.L nephrometry score for predicting the outcome following partial nephrectomy

  Complexity according to MNS p
Low (5–9)
15 patient
Moderate (10–14)
20 patient
High (15–23)
16 patient
Age (years) 49.3 ± 12.3 (20–63) 51.9 ± 13.7 (30–80) 48.8 ± 13.9 (20–65) .941
BMI (kg/m2) 31.4 ± 6.2 (22–42) 27.3 ± 4.1 (21–36) 31.4 ± 4.5 (25–39) .022*
ASA Score 1 (1–2) 1 (1–2) 2 (1–2) .404
Pre-Op eGFR (ml/min/1.73m2) 84.9 ± 18.7 (55–141) 81.7 ± 25.3 (43–130) 87.3 ± 29.1 (40–140) .788
Pre-Op Hb (gm/dl) 14 ± 1.3 (11.4–16.4) 12.7 ± 1.9 (9.1–15.8) 13 ± 1.5 (10.1–15.6) .091
Sex: male/female 8 (53.3%)/7 (46.7%) 11 (55%)/9 (45%) 10 (56.9%)/6 (37.5%) .856
Side: right/left 11 (73.3%)/4 (26.7%) 8 (40%)/12 (60%) 11 (68.8%)/5 (31.3%) .087
CKD (ml/min/1.73m2)     .583
  > 90 5/15 (33.3%) 5/20 (25%) 7/16 (43.8%)
 60–89 9/15 (60%) 11/20 (55%) 6/16 (37.5%)
 30–59 1/15 (6.7%) 4/20 (20%) 3/16 (18.8%)
Clinical T     .216
 T1 13/15 (86.7%) 14/20 (70%) 9/16 (56.2%)
 T2 2/15 (13.3%) 6/20 (30%) 7/16 (43.8%)
OR time (h) 2.7 ± 0.67 (1.7–4.25) 3 ± 0.79 (2–5) 3.1 ± 0.57 (2.25–4) .153
WIT (min) 14 (0–20) 18.5 (0–40) 16.5 (0–27) .070
LOS (day) 4 (3–9) 5 (4–29) 5 (4–14) .077
Hb loss (gm/dl) 1 (0.2–3.5) 1 (0.10–3.7) 1 (0.1–5.3) .937
Blood loss (ml) 150 (50–1500) 275 (50–900) 475 (50–1100) .081
Ischemia type     .317
 Warm ischemia 11/15 (73.3%) 18/20 (90%) 11/16 (68.8%)
 No ischemia 4/15 (26.7%) 2/20 (10%) 5/16 (31.2%)
Hilar position 0/10 0/10 10/10 (100%) <.001*
RPS     .049*
 Intrarenal/extrarenal 7 (46.7%)/8 (53.3%) 14 (70%)/6 (30%) 14 (87.5%)/2 (12.5%)
PCS entry 5/15 (33.3%) 11/20 (55%) 10/16 (62.5%) .241
Post-Op Hb (gm/dl) 12.7 ± 1.5 (10–15.8) 11.4 ± 1.8 (7.1–14.5) 11.5 ± 1.7 (8.6–15) .074
Total complications 2/15 (13.3%) 6/20 (30%) 9/16 (56.3%) .037*
Secondary intervention 2/15 (13.3%) 5/20 (25%) 3/16 (18.8%) .757
VC 1/15 (6.7%) 2/20 (10%) 1/16 (6.3%) 1
Ureteric injury 0/15 1/20 (5%) 1/16 (6.3%) 1
Blood Transfusion 2/15 (13.3%) 2/20 (10%) 5/16 (31.3%) .269
Leakage 0/15 4/20 (20%) 2/16 (12.5%) .255
Drain removal (d) 4 (3–8) 4.5 (4–28) 5 (3–14) .200
Conversion to RN 1/15 (6.7%) 1/20 (5%) 2/16 (12.5%) .818
RF impairment 1/15 (6.7%) 2/20 (10%) 3/16 (18.8%) .647
Positive margin 0/15 0/20 3/16 (18.8%) .049*
Post-Op eGFR 3mo (ml/min/1.73m2) 79.6 ± 15.4 (60–114) 78.3 ± 23.1 (27–117) 75.3 ± 26.7 (21.8–130) .856
  1. Values are presented as mean ± SD (range), Median (range) or number of patients (%) as appropriate
  2. AML angiomyolipoma, ASA American society of anesthesiology, BMI body mass index, CKD chronic kidney disease, eGFR estimated glomerular filtration rate, Hb hemoglobin, LOS length of hospital stay, MNS newly modified nephrometry score, OR operative, PCS pelvi-calyceal system, Post-Op postoperative, Pre-Op preoperative, RF renal function, RN radical nephrectomy, RPS renal pelvic score, VC vascular complications, WIT warm ischemia time
  3. *Significant