How do symptoms have an impact on the prognosis of renal cell carcinoma?
OBJECTIVE
Symptomatic renal cell carcinoma (RCC) is well known to have a characteristic behavior. We therefore evaluated the impact of systemic symptoms on the prognosis of RCC.


METHODS
Patard's criteria were used to classify symptoms before operation into three groups defined as: S1 (incidental tumor), S2 (localized symptoms) and S3 (systemic symptoms). Selected clinicopathological factors including gender, maximum tumor diameter, clinical stage, hemoglobin, C-reactive protein (CRP) and immunosuppressive acidic protein, nuclear grade and venous invasion were measured preoperatively in 252 patients. To determine impacts of them on the prognosis of RCC, we compared quantitative results using Cox multivariate analysis.


RESULTS
The cancer-specific five-year survival rates were 93.1%, 71.0%, and 20.2% for S1 (144 patients), S2 (80 patients) and S3 (28 patients), respectively (P < 0.0001). By the univariate analysis, S2 and S3 were significant prognostic factors (risk ratio 4.5, P = 0.0003, risk ratio 19.15, P < 0.0001, respectively). By the multivariate analysis limited to preoperative clinical characteristics, S3 and CRP were independent factors (risk ratio 7.05, P = 0.0006, risk ratio 3.53, P = 0.0052, respectively). When pathological factors as well as preoperative clinical features were included on multivariate analysis, S3 and CRP remained to be independent predictive factors (risk ratio 6.01, P = 0.0031, risk ratio 2.64, P = 0.0040, respectively). Among pathological factors, only nuclear grade was a significant prognostic factor (risk ratio 2.92, P = 0.013).


CONCLUSIONS
The presence of systemic symptoms is an independent prognostic factor along with nuclear grade and CRP.
Kawata
Nozomu
N
Department of Urology, Nihon University School of Medicine, Tokyo, Japan. asahigen@med.nihon-u.ac.jp
Nagane
Yusuke
Y
Yamaguchi
Kenya
K
Ichinose
Taketo
T
Hirakata
Hitoshi
H
Takahashi
Satoru
S
D000368:Aged; D014408:Biomarkers, Tumor / Q000097:blood; D002097:C-Reactive Protein / Q000378:metabolism; D002292:Carcinoma, Renal Cell / Q000097:blood / Q000175:diagnosis* / Q000473:pathology; D005260:Female; D006454:Hemoglobins / Q000378:metabolism; D006801:Humans; D007668:Kidney / Q000473:pathology; D007680:Kidney Neoplasms / Q000097:blood / Q000175:diagnosis* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009363:Neoplasm Proteins / Q000097:blood; D011379:Prognosis; D012189:Retrospective Studies
D014408:Biomarkers, Tumor; D006454:Hemoglobins; D009363:Neoplasm Proteins; C030193:immunosuppressive acidic protein; D002097:C-Reactive Protein