Background: Radiographic characteristics may be associated withthe degree of renal function preservation following partial nephrectomy.The purpose of this study was to determine the impact ofpreoperative radiographic variables on change in renal functionusing 24-hour urine creatinine clearance (uCrCl).Methods: Patients with partial nephrectomy performed fromNovember 2003 to 2008 were enrolled in the study. Serum creatinineand 24-hour urine was collected preoperatively and at3, 6 and 12 months postoperatively. Computed tomography ormagnetic resonance imaging was used to determine tumour size,tumour location and renal volume.Results: Of the 36 patients, median age was 62 (range 30-78) and21 (58%) were male. The mean tumour diameter was 2.8±1.4 cm.Twenty-two (61%) tumours were located at the renal pole and11 (31%) were endophytic. Overall, mean preoperative uCrClwas 88.8±34.2 mL/min and mean postoperative uCrCl was82.8±33.6 mL/min (6.8%; p < 0.01). On multivariable analysis,no single characteristic was associated with a clinically prohibitivedecrease in renal function (-9.4% if endophitic, p = 0.06; -0.57%per cm diameter, p = 0.73; and -6.9% if located at the renal pole,p = 0.15). The total renal volume was also not significantly associatedwith renal function change (-1.1% per 100 cc, p = 0.86).Interpretation: Preoperative radiographic characteristics seem tobe associated with small changes in renal function following partialnephrectomy. These data support renal functional benefits of partialnephrectomy regardless of tumour size and location.
Long term renal function following selective angioembolization for iatrogenic vascular lesions after partial nephrectomy: A matched case-control study
