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  • Title: Maximal preservation of renal function in patients with bilateral Wilms' tumor: therapeutic strategy of late kidney-sparing surgery and replacement of radiotherapy by high-dose melphalan and stem cell rescue.
    Author: Saarinen-Pihkala UM, Wikström S, Vettenranta K.
    Journal: Bone Marrow Transplant; 1998 Jul; 22(1):53-9. PubMed ID: 9678796.
    Abstract:
    In children with bilateral Wilms' tumor, the therapy should aim at maximal preservation of renal parenchyma and function. Local radiotherapy may give rise to second malignant neoplasms and may impair renal function. We present a therapeutic strategy without any irradiation. Three children were diagnosed with bilateral Wilms' tumor at ages from 6 months to 5 years. Each patient had a massive tumor with local stage III on one side; one had pulmonary metastases. The therapeutic strategy was first to obtain tissue for histology by percutaneous needle biopsy, to administer pre-operative chemotherapy until desired tumor shrinkage, and then to perform kidney-sparing resective surgery. After a period of conventional chemotherapy, the patients were consolidated with high-dose (HD) melphalan and ABMT. Renal parenchyma spared post-surgery (right/left) was 0%/70%, 60%/40% and 40%/60% of the original kidney volumes. The toxicity of the ABMT procedure was mild, the patients engrafted promptly, and were discharged on days +14 to +27. All patients survive disease-free, 3 years 4 months to 4 years 5 months post-transplant. Our program resulted in good preservation of renal parenchyma and normal function, and we consider the risk of this ABMT program smaller than the late consequences of local radiotherapy for children with bilateral Wilms' tumor. The therapeutic strategy described merits further evaluation.
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