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  • Title: Disease progression and kidney function after partial vs. radical nephrectomy for T1 renal cancer.
    Author: Forbes CM, Rendon RA, Finelli A, Kapoor A, Moore RB, Breau RH, Lacombe L, Kawakami J, Drachenberg DE, Pautler SE, Jewett MMA, Saarela O, Liu Z, Tanguay S, Black PC.
    Journal: Urol Oncol; 2016 Nov; 34(11):486.e17-486.e23. PubMed ID: 27423824.
    Abstract:
    PURPOSE: Partial nephrectomy (PN) for early stage renal cancer preserves renal function better than radical nephrectomy (RN) and is generally considered oncologically similar. The Intergroup European Organisation for Research and Treatment of Cancer trial comparing outcomes after PN vs. RN, however, showed reduced overall survival in the PN group. Our aim was to evaluate recurrence, death, and renal function after PN vs. RN for T1 tumors in a Canadian population. MATERIALS AND METHODS: From 2000 to 2015, 2,358 patients with a first occurrence of a clinical T1 renal cancer who underwent PN or RN were identified from the Canadian Kidney Cancer Information System. Clinical, surgical, and pathologic parameters were analyzed. Time to progression was compared after PN vs. RN using a Cox proportional hazards model, adjusted for pertinent variables. RESULTS: Inclusion criteria were met in 1,615 PN and 743 RN. Preoperative characteristics appeared similar in both groups. Time to progression was not different after PN vs. RN, adjusted for potential confounders (hazard ratio = 1.17 [95% CI: 0.8-1.72, P = 0.42]). Postoperative estimated glomerular filtration rate at 1 and 3 years was significantly greater for PN vs. RN in a linear regression model, accounting for preoperative estimated glomerular filtration rate. CONCLUSIONS: These results suggest that progression-free survival after PN and RN in patients with T1 renal cancer was similar, but that there was better preservation of renal function after PN. This suggests that both PN and RN have similar oncological efficiency, and that selection of surgical approach should be based on other factors such as technical feasibility, potential complications, and preservation of renal function.
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