Survival after partial and radical nephrectomy for high-risk disease: A propensity-matched comparison

Auteurs-es

  • Matthew J. Maurice Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio
  • Hui Zhu Division of Urology, Louis Stoke Cleveland VA Medical Center, Cleveland, Ohio; Department of Urology, Glickman Urological and Kidney Institute, Cleveland Clinic
  • Simon Kim Urology Institute, University Hospitals Case Medical Center, Cleveland, Ohio
  • Robert Abouassaly Urology Institute, University Hospitals Case Medical Center, Cleveland, Ohio

DOI :

https://doi.org/10.5489/cuaj.3707

Résumé

Introduction: Increasingly, partial nephrectomy has been applied to high-risk disease without evidence that its survival benefits can be extrapolated to this entity. We aimed to compare overall survival after partial vs. radical nephrectomy in patients with high-risk renal cell carcinoma.

Methods: Using the National Cancer Data Base, we identified patients who underwent partial or radical nephrectomy for high-risk disease between 2003 and 2006. High-risk disease was defined as the presence of adverse pathological features within the primary tumour, namely high-grade or unfavourable histology, T3 stage, or both. After matching the partial and radical nephrectomy groups
based on propensity scores, 1680, 276, and 76 patients with high-grade or unfavourable histology, T3 stage, or both adverse pathologic features, respectively, were available for analysis. Five-year overall survival was compared after partial vs. radical nephrectomy for each high-risk cohort using the Kaplan-Meier and log rank tests.

Results: Partial nephrectomy was associated with a statistically significant improvement in five-year overall survival compared to radical nephrectomy for small tumours (median size 3.0 cm; interquartile
range 2.1‒4.5 cm) with high-grade or unfavourable histology (87% vs. 81%; p<0.01) or with pT3a stage (82% vs. 71%; p<0.01). For patients concomitantly harbouring both adverse pathologic
features, no difference in survival was detected (p=0.21).

Conclusions: Partial nephrectomy is associated with survival benefits in patients with adverse pathologic features, suggesting that renal preservation is not only safe, but also potentially beneficial for high-risk disease. Due to inherent selection bias associated with partial nephrectomy use, prospective validation of these findings is needed.

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Publié-e

2016-09-13

Comment citer

Maurice, M. J., Zhu, H., Kim, S., & Abouassaly, R. (2016). Survival after partial and radical nephrectomy for high-risk disease: A propensity-matched comparison. Canadian Urological Association Journal, 10(9-10), E282–9. https://doi.org/10.5489/cuaj.3707

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Original Research