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Table 1 Patient’s characteristics, surgical results, and follow-up outcomes of CRNU and TRNU

From: Comparison between completely and traditionally retroperitoneoscopic nephroureterectomy for upper tract urothelial cancer

Parameter CRNU TRNU p value
No. patients, n 107 110  
Sex    0.91
 Male 46 48  
 Female 61 62  
Median age, year (range) 71 (55–82) 71 (52–88) 0.51
Mean BMI, kg/m2 (range; ±SD) 23.2 (18.1–28.1; ±2.8) 23.5 (17.6–29; ±2.9) 0.50
Operative side, n    0.71
 Left 52 51  
 Right 55 59  
Tumor location    
 Renal pelvis 62 68  
 Ureter 39 37  
  Upper 21 18  
  Mid 4 10  
  Distal 14 9  
 Multiple location 6 5  
Mean overall operating time, min (range; ±SD) 106.0 (46–216; ±37.9) 199.5 (100–416; ±69.1) <0.0001
 Male 105.0 (76–172; ±25.7) 218.3 (128–416; ±71.9) <0.0001
p value (Male versus Female) 0.93 > 0.05 0.06 > 0.05  
 Female 106.5 (46–216; ±42.3) 185.1 (100–410; ±63.2) <0.0001
Mean estimated blood loss, ml (range; ±SD) 47.2 (5–400; ±82.4) 166.9 (20–1450; ±250.9) 0.002
RNU with lymph node dissection    
 No. of patients 3 No  
Open conversion No No  
Intraoperative and postoperative complications    
(n/Clavien Classification)    
 UTI 4/grade II 7/grade II  
 Lymphatic leakage 4/grade I 2/grade I  
 Others 0 0  
Single bladder instillation of chemotherapy 95 97  
The removal time of drain after surgery, days (range; ± SD) 4.0 (2–17; ±3.0) 4.2 (2–12; ±1.5) 0.79
Mean hospital stay, days (range; ±SD) 6.1 (3–21; ±3.5) 8.1 (4–26; ±3.3) 0.03
The removal time of urethral catheter after surgery, week 1 1  
Pathologic stage, n    
 pTaN0M0 8 6  
 pT1N0M0 63 65  
 pT1N1M0 0 1  
 pT2N0M0 30 23  
 pT2N2M0 1 0  
 pT3N0M0 4 14  
 pT3N1M0 1 0  
 pT4N2M0 0 1  
Pathologic grade (G), n    
 G1 38 31  
 G2 54 52  
 G3 15 27  
The surgical margin of the distal ureter (negative or positive) Negative Negative  
Mean follow-up time, month (range; ±SD) 13.4 (6–18; ±2.1) 37.5 (13–63; ±15.9)  
No. of patients of follow-up (n) 105 106  
Bladder tumor recurrence    
 No. patients of follow-up (n) 4 21  
  1. BMI body mass index, CRNU completely retroperitoneoscopic nephroureterectomy, TRNU traditionally retroperitoneoscopic nephroureterectomy, UTI urinary tract infection