New chronic kidney disease and overall survival after nephrectomy for small renal cortical tumors Journal Article


Authors: Mashni, J. W.; Assel, M.; Maschino, A.; Russo, M.; Masi, B.; Bernstein, M.; Huang, W. C.; Russo, P.
Article Title: New chronic kidney disease and overall survival after nephrectomy for small renal cortical tumors
Abstract: Objective To evaluate kidney functional and overall survival (OS) outcomes in a cohort of patients who underwent partial nephrectomy (PN) or radical nephrectomy (RN) for tumors ≤4 cm. Materials and Methods We performed a retrospective study on 2110 patients who underwent PN or RN with normal contralateral kidneys and normal serum creatinine from 1989 through 2012. Estimated glomerular filtration rate (eGFR) was calculated using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. Primary end points were baseline incidence of CKD, OS, and new onset of eGFR ≤60 and ≤45 mL/min/1.73 m2. Results Preoperatively, 30% and 8% of the cohort had eGFR ≤60 and ≤45 mL/min/1.73 m2, respectively. Five-year freedom from eGFR ≤60 mL/min/1.73 m2 was 24% (95% confidence interval [CI], 19%-30%) and 76% (95% CI, 72%-78%) for RN and PN, respectively, and 5-year freedom from eGFR ≤45 mL/min/1.73 m2 was 51% (95% CI, 45%-56%) and 91% (95% CI, 89%-93%) for RN and PN, respectively. On multivariable analysis, hazard ratio for RN vs PN was 4.98 (95% CI, 4.11-6.04, P <.0001) for new onset of eGFR ≤60 mL/min/1.73 m2 and 9.28 (95% CI, 7.26-11.86, P <.0001) for new onset of eGFR ≤45 mL/min/1.73 m2. The RN group had a higher rate of death per year than the partial group (hazard ratio = 1.61, 95% CI, 1.24-2.08, P =.0003). Conclusion The present study confirms published works demonstrating that a significant proportion of patients have pre-existing CKD. In patients with normal kidney function, RN is associated with a significantly higher risk for developing CKD and worse OS than PN. © 2015 Elsevier Inc.
Journal Title: Urology
Volume: 86
Issue: 6
ISSN: 0090-4295
Publisher: Elsevier Science, Inc.  
Date Published: 2015-12-01
Start Page: 1137
End Page: 1143
Language: English
DOI: 10.1016/j.urology.2015.07.046
PROVIDER: scopus
PUBMED: 26362947
PMCID: PMC5017203
DOI/URL:
Notes: Article -- Export Date: 3 March 2016 -- Source: Scopus
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MSK Authors
  1. Paul Russo
    449 Russo
  2. Melissa Jean Assel
    39 Assel
  3. Joseph Wadie Mashni
    10 Mashni