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  • Title: Long-term survival in bilateral renal cell carcinoma: a retrospective single-institutional analysis of 101 patients after surgical treatment.
    Author: Becker F, Siemer S, Tzavaras A, Suttmann H, Stoeckle M.
    Journal: Urology; 2008 Aug; 72(2):349-53. PubMed ID: 18485459.
    Abstract:
    OBJECTIVES: Bilateral renal cell carcinomas (bRCC) account for <4% of all renal tumors. We report on the management, histopathologic results, and long-term follow-up of 101 patients with bRCC. METHODS: A total of 101 patients with bRCC who had undergone surgery from 1975 to 2005 at our institution were identified from our kidney tumor database and included in this retrospective analysis. Cancer-specific survival was assessed using the Kaplan-Meier method. Subgroups were compared using the log-rank test. Statistical analysis was performed with the Statistical Package for Social Sciences for Windows. RESULTS: Of 3097 kidney tumor patients, 101 (3.3%) had bRCC on final histopathologic examination. Synchronous tumors were found in 43 patients (42.6%) and metachronous tumors in 58 (57.4%). The cancer-specific survival rate of the entire cohort was 91.9%, 79.1%, and 56.7% after 5, 10, and 20 years, respectively. The survival of patients with synchronous or metachronous bRCCs did not differ significantly. Patients with metachronous bRCC were significantly younger at first diagnosis than those with synchronous bRCCs (median age 53.6 vs 58.7 years, P < .05). The histopathologic results revealed significantly greater rates of papillary bRCCs in synchronous tumors (P < .05). CONCLUSIONS: Standardized techniques of nephron-sparing surgery can achieve excellent survival rates in bRCC. Among other arguments for nephron-sparing surgery, kidney-preserving strategies are of particular importance in younger patients with unilateral RCC against the background of an increasing risk of developing a contralateral neoplasm with older age.
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