Abstract
Purpose
We aimed to determine incidence, pathologic findings, prognostic factors and clinical outcomes for patients with clinically localized papillary RCC.
Methods
Demographic, clinical and pathologic findings were collected on all patients with PRCC undergoing surgery at four academic medical centers. The primary endpoint was cancer-specific survival (CSS). Relapse-free survival (RFS) and overall survival (OS) were secondary endpoints. Kaplan–Meier estimates were obtained, and Cox proportional hazard regression models were used to assess predictors of mortality and relapse.
Results
We identified 626 PRCC, of which 373 (60 %) were type 1 and 253 (40 %) were type 2, with three-quarters of all tumors being pT1. Compared to patients with type 1, those with type 2 were older (mean age: 63 vs 61; p = 0.02), presented more commonly with symptoms (13 vs 7 %; p = 0.02) and had larger mean tumor size (5.2 vs 4.3 cm; p = 0.001). With a median follow-up of 41 months (IQR: 16–68), 92 patients had died of PRCC (15 %), 48 (8 %) experienced relapse, and 101 died from all causes (16 %). The estimated 5-year CSS, RFS and OS were 83, 91 and 82 %, respectively. In multivariable analysis, older age, T stage and nodal status were predictors of CSS and OS. However, PRCC subtype was not a predictor of CSS, RFS or OS.
Conclusion
While patients with type 2 PRCC appear to present with more advanced disease than patients with type 1, PRCC subtype does not appear to be an independent predictor of CSS, RFS or OS for treated localized disease.
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Abbreviations
- PRCC:
-
Papillary renal cell carcinoma
- CSS:
-
Cancer-specific survival
- RFS:
-
Relapse-free survival
- OS:
-
Overall survival
- HR:
-
Hazard ratio
- SD:
-
Standard deviation
- CI:
-
Confidence interval
- IQR:
-
Interquartile range
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Authors’ contribution
Ledezma involved in protocol and project development, data collection, data management and data analysis, wrote and edited the manuscript. Negron involved in data collection or management. Paner involved in project development and data collection. Rjepaj involved in data collection or management. Lascano involved in data collection or management. Haseebuddin involved in data collection or management. Dangle involved in data collection or management. Shalhav involved in protocol/project development, wrote and edited the manuscript. Crist involved in data collection or management. Raman involved in protocol/project development, wrote and edited the manuscript. DeCastro involved in protocol/project development, wrote and edited the manuscript. Harik involved in data collection or management. Paroder involved in data collection or management. Uzzo wrote and edited the manuscript. Kutikov wrote and edited the manuscript. Eggener involved in protocol/project development and data analysis, wrote and edited the manuscript.
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The manuscript entitled “Clinically Localized Type 1 and 2 Papillary Renal Cell Carcinomas Have Similar Survival Outcomes Following Surgery” was an investigation approved by the Internal Board Review Committee of the University of Chicago (IRB number # 13-0461). Therefore, the manuscript has been performed in accordance with the ethical standards laid down in the 1964 Declaration of Helsinki and its later amendments.
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In addition, all patients gave their informed consent prior to their inclusion in the study.
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Ledezma, R.A., Negron, E., Paner, G.P. et al. Clinically localized type 1 and 2 papillary renal cell carcinomas have similar survival outcomes following surgery. World J Urol 34, 687–693 (2016). https://doi.org/10.1007/s00345-015-1692-3
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DOI: https://doi.org/10.1007/s00345-015-1692-3