Abstract
Purpose
Prognostic impact of lymphadenectomy during radical nephroureterectomy (RNU) for urothelial carcinoma of the upper urinary tract (UTUC) is controversial. Our aim was to assess the impact of lymph node status (LNS) on survival in patients treated by RNU.
Methods
In our multi-institutional, retrospective database, 714 patients with non-metastatic UTUC had undergone RNU between 1995 and 2010. LNS was tested as prognostic factor for survivals through univariate and multivariable Cox regression analysis.
Results
Median age was 70 years [interquartile range (IQR), 60–75] with median follow-up of 27 months (IQR, 10–50). Overall, lymphadenectomy was performed in 254 patients (35.5 %). Among these patients, 204 (80 %) had negative lymph nodes (pN0) and 50 (20 %) had positive lymph nodes (pN1/2). The 5-year cancer-specific survival (CSS) was 81 % [95 % confidence interval (CI), 73–88 %] for pN0 patients, 85 % (95 % CI, 80–90 %) for pNx patients and 47 % (95 % CI, 24–69 %) for pN1/2 patients (p < 0.001). Metastasis-free survival (MFS) and overall survival (OS) rates were significantly lower in pN1/2 patients than in pN0 and pNx patients (p < 0.05). On multivariable analysis, LNS did not appear as an independent prognostic factor for CSS, OS or MFS (p > 0.05). In case of lymph node involvement, extra-nodal extension was marginally associated with worse CSS (log rank p = 0.07). The retrospective design was the main limitation.
Conclusion
LNS is helpful for survival stratification in patients treated with RNU for UTUC. However, LNS did not appear as an independent predictor of survival in this retrospective series and needs to be investigated in a large multicentre, prospective evaluation.
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Acknowledgments
The authors would like to kindly thank other collaborators from the French collaborative national database on UTUC: Baptiste Albouy, Mehdi Mokhtar Ariane, Frederic Arroua, Marie Audouin, Alexis Arvin Berod, Pierre Bigot, Nicolas Brichart, Franck Bruyere, Thomas Bodin, Jean-Nicolas Cornu, Sébastien Crouzet, Francky Delage, Aurélien Descazeaud, Stéphane Droupy, Pierre Olivier Fais, Solène Gardic, Pascal Gres, Julien Guillotreau, Laurent Guy, Sophie Hurel, Jacques Irani, Jean-Alexandre Long, Charles Marchand, Alexandre Matte, Olivier Merigot de Treigny, Yann Neuzillet, Géraldine Pignot, Emmanuel Ravier, François Rozet, Marc Soulié, Antoine Valeri and Evanguelos Xylinas.
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The authors declare that they have no conflict of interest.
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This study is conducted for the French collaborative national database on UTUC.
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Ouzzane, A., Colin, P., Ghoneim, T.P. et al. The impact of lymph node status and features on oncological outcomes in urothelial carcinoma of the upper urinary tract (UTUC) treated by nephroureterectomy. World J Urol 31, 189–197 (2013). https://doi.org/10.1007/s00345-012-0983-1
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DOI: https://doi.org/10.1007/s00345-012-0983-1