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Combined Modality Therapy of Pediatric Wilms' Tumor in Upper Egypt: A Retrospective Study

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Author(s): Heba A. Sayed | Mona M. Sayed | Mohamed I. El-Sayed

Journal: Middle East Journal of Cancer
ISSN 2008-6709

Volume: 3;
Issue: 4;
Start page: 131;
Date: 2012;
Original page

Keywords: Nephroblastoma | Chemotherapy and radiotherapy | Survival

ABSTRACT
Background: We conducted a retrospective analysis to investigate the clinical outcome of combined modality therapy using multiagent chemotherapy, nephrectomy, and radiotherapy in treatment of children with Wilms' tumor.Methods: This study was conducted on 91 cases of newly diagnosed Wilms' tumor from January 2001 until February 2012. Patients were categorized into two groups according to treatment approach: i) preoperative chemotherapy with delayed surgery(group A; n=66) and ii) immediate surgery (group B; n=25).Results: Preoperative chemotherapy showed a 54.5% partial response rate in group A patients. A final stage distribution indicated that the majority of patients (64%) from both groups were considered to be in the early disease stages (I and II). The median follow up was 49 months (range 3-124). The five-year overall survival rate was 66.5%, whereas the event-free survival rate was 62.5%. In univariate analysis, factors associated with statistically significant reduction in overall (P24 months (P=0.0095),disease stage (P=0.0014), and blastimal subtype (P=0.006) were associated with significant increases in relapse rate.Conclusion: Preoperative chemotherapy resulted in a final stage redistribution that placed the majority of patients in the early stages of the disease. Age at diagnosis, disease stage, and histological subtype significantly affected survival and relapse rates.
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