Abstract:
BACKGROUND:Prognostic markers for renal cell carcinoma (RCC), such as patient symptoms, tumor stage, tumor size, and tumor grade, are useful for determining appropriate follow-up and selecting patients for adjuvant therapy. Histologic coagulative tumor necrosis, also reported to be a prognostic marker for RCC, has not previously been extensively described or investigated. Hence, the objective of the current study was to characterize tumor necrosis as a prognostic feature of RCC. METHODS:The authors of the current study identified 3009 patients treated surgically for RCC between 1970 and 2002 from the Mayo Clinic Nephrectomy Registry (Rochester, MN). Associations of tumor necrosis with clinical, laboratory, and pathologic features were examined with chi-square, Fisher exact test, and Wilcoxon rank-sum tests. Cancer-specific survival was estimated with the Kaplan-Meier method, and associations with outcome were assessed with Cox proportional hazard models. RESULTS:Tumor necrosis was present in 690 of 2445 (28%) clear cell, 196 of 421 (47%) papillary, and 28 of 143 (20%) chromophobe RCCs. The risk ratio for death from RCC in patients with necrotic compared with non-necrotic tumors was 5.27 (95% confidence interval [CI]: 4.56-6.09; P < 0.001) for clear cell, 4.20 (CI: 1.65-10.68; P < 0.001) for chromophobe, and 1.49 (CI: 0.81-2.74; P = 0.199) for papillary RCC. The survival difference for clear cell RCC persisted even after multivariate adjustment for tumor stage, size, and grade (risk ratio 1.90; P < 0.001). CONCLUSIONS:Histologic coagulative tumor necrosis is an independent predictor of outcome for clear cell and chromophobe RCC, and it should be routinely reported and used in clinical assessment.
journal_name
Cancerjournal_title
Cancerauthors
Sengupta S,Lohse CM,Leibovich BC,Frank I,Thompson RH,Webster WS,Zincke H,Blute ML,Cheville JC,Kwon EDdoi
10.1002/cncr.21206subject
Has Abstractpub_date
2005-08-01 00:00:00pages
511-20issue
3eissn
0008-543Xissn
1097-0142journal_volume
104pub_type
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