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Analysis of lymph node dissection in patients with ≥7-cm renal tumors

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Abstract

Purpose

To analyze the role of lymph node dissection (LND) in patients with large renal tumors.

Methods

We performed a retrospective study of patients with renal cell carcinoma ≥7 cm in size undergoing surgery between 1990 and 2012. Primary outcome measures were recurrence-free and overall survival of patients who did and did not undergo LND. Cox proportional hazards regression models were created to account for known risk factors for recurrence and survival. Secondary outcomes were recurrence-free and overall survival by lymph node status, lymph node template and number of lymph nodes removed.

Results

Of 524 patients, 164 had disease recurrence and 197 died. Median follow-up was 5 and 5.5 years for patients who did not die or have a recurrence, respectively. A total of 334 (64 %) patients underwent LND, and node-positive disease was identified in 26 (8 %). For patients who did and did not undergo LND, 5-year recurrence-free survival was 64 and 77 %, respectively. Five-year overall survival was 75 and 78 %, respectively. LND was not a predictor of recurrence or survival in multivariate analysis. Node-positive disease was associated with recurrence (p < 0.0005) and mortality (p = 0.032), although node-positive patients had a 5-year overall survival of 65 %.

Conclusions

We did not find a difference in recurrence-free or overall survival in patients with ≥7-cm tumors whether or not they underwent LND. Node-positive disease was associated with worse outcomes, suggesting that LND provides important staging information that can be important in the design of adjuvant clinical trials.

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Acknowledgments

This investigation was supported by the Hanson Family Renal Cancer Research Fund, the Sidney Kimmel Center for Prostate and Urologic Cancers, and the National Institutes of Health under Ruth L. Kirschstein National Research Service Award T32 CA082088. Its contents are solely the responsibility of the authors and do not necessarily represent the official views of the NIH.

Conflict of interest

The authors have no conflicts of interest.

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Authors and Affiliations

  1. Urology Service, Department of Surgery, Memorial Sloan-Kettering Cancer Center, 1275 York Avenue, New York, NY, 10065, USA

    Michael A. Feuerstein, Wassim M. Bazzi, Melanie Bernstein & Paul Russo

  2. Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, NY, USA

    Matthew Kent

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  1. Michael A. Feuerstein
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  2. Matthew Kent
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  3. Wassim M. Bazzi
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  4. Melanie Bernstein
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Correspondence to Michael A. Feuerstein.

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Feuerstein, M.A., Kent, M., Bazzi, W.M. et al. Analysis of lymph node dissection in patients with ≥7-cm renal tumors. World J Urol 32, 1531–1536 (2014). https://doi.org/10.1007/s00345-013-1233-x

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  • DOI: https://doi.org/10.1007/s00345-013-1233-x

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