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S Steffens, A Köhler, R Rudolph, H Eggers, C Seidel, M Janssen, G Wegener, M Schrader, MA Kuczyk and AJ Schrader
Abstract
BACKGROUND: To evaluated the prognostic significance of the pre-operative C-reactive protein (CRP) serum level in patients with renal cell cancer (RCC). METHODS: We evaluated 1,161 RCC patients with complete patient and tumour specific characteristics as well as information about their pre-operative CRP-level, who had undergone either radical nephrectomy or nephron-sparing surgery at two German high-volume centres (University Hospitals of Hannover and Ulm). The mean follow-up was 54 months. RESULTS: The CRP-level, stratified to three subgroups (CRP <= 4, 4--10, and >10 mg/l), correlated significantly with tumour stage (p < 0.001), the risk of presenting nodal disease (2.1, 3.1, and 16.4%) and distant metastasis (2.9, 8.6, and 30.0%; p < 0.001). The Kaplan-Meier 5-year cancer specific survival (CSS) rates were 89.4, 77.9, and 49.5%, respectively (p < 0.001). Multivariate analysis identified CRP as an independent prognosticator for CSS as well as overall survival (p < 0.001). Patients with a CRP of 4--10 and >10 mg/l had a 1.67 and 2.48 fold higher risk of dying due to their RCC compared to those with a pre-operative CRP <=4 mg/l, respectively. CONCLUSIONS: A high preoperative serum CRP level is an independent predictor of poor survival in patients with RCC. Its routine use could allow better risk stratification and risk-adjusted follow-up of RCC patients.
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Concepts
Cancer staging, Kidney cancer, Renin, Nephrectomy, Lung cancer, Renal cell carcinoma, C-reactive protein, Cancer
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