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  • Title: Treatment of childhood Wilms' tumor without radiotherapy in Nicaragua.
    Author: Baez F, Fossati Bellani F, Ocampo E, Conter V, Flores A, Gutierrez T, Malta A, Mendez G, Pacheco C, Palacios R, Sala A, Galimberti S, Cavalli F, Masera G.
    Journal: Ann Oncol; 2002 Jun; 13(6):944-8. PubMed ID: 12123340.
    Abstract:
    BACKGROUND: Recent trends in therapeutic strategies for Wilms' tumor are based on an attempt to reduce or omit radiotherapy (RT) in a sizable fraction of patients. We report here the clinical and histological features as well as the results obtained in 37 children (23 males, 14 females; median age at diagnosis 3 years, range 0.8-8 years) diagnosed between 1991 and 1996, and treated with chemotherapy (CT) and surgery at La Mascota Hospital, Managua, Nicaragua. PATIENTS AND METHODS: Patients were grouped as follows: those who underwent surgery at diagnosis (group A, n = 4), patients who received preoperative CT because of large tumor size (group B, n = 27), lung metastases (n = 5) or bilateral disease (n = 1) (group C, n = 6). Treatment consisted of vincristine (VCR) and actinomycin-D (ACTD) for 24 weeks in group A, and of VCR, ACTD and adriamycin for 68 weeks in groups B and C. Histology was classified as favorable in 30 patients (81%), unfavorable in six patients (all of group B) and unknown in one. RESULTS: With a median follow-up time of 6.4 years the event-free survival for the whole group was 80.1%+/-6.8 (SE). No event occurred beyond 5 years of diagnosis. CONCLUSIONS: These results suggest that RT does not appear necessary for the majority of patients, and that an excellent surgical approach associated with an intensive CT schedule can control the disease, even in the absence of adequate information on the intra-abdominal tumor extent.
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