BACKGROUND: Because the natural history of pediatric patients with metastatic nonrhabdomyosarcomatous soft-tissue sarcomas (NRSTS) had not been well described, we retrospectively reviewed our single-institution experience with these tumors. PROCEDURE: We identified 26 patients with metastatic NRSTS who were treated at St. Jude Children's Research Hospital from December 1971 through July 1995. We evaluated the characteristics of each patient, including age, sex, primary site, stage, type of therapy received, and outcome. Sites of metastatic disease at diagnosis and relapse were noted. RESULTS: The median age of the 26 study patients at diagnosis was 14. 8 years; 54% of patients were male and 69% were white. The most common histologies were synovial sarcoma, alveolar soft-part sarcoma, and malignant fibrous histiocytoma. Most primary tumors (73% of cases) occurred in the trunk or extremities. Most patients presented with large (>5 cm), high-grade lesions. All 26 patients received chemotherapy, and 8 responded to an ifosfamide- or cyclophosphamide-doxorubicin-based regimen. Radiotherapy was administered to 15 patients, and 13 had a partial or complete resection of the primary tumor. Six patients underwent thoracotomy. The estimated 2-year survival for the cohort was 34.6% +/- 8.9%; the 2-year progression-free survival was 15.4% +/- 6.3%. The lung was the most common site of failure. CONCLUSIONS: Children with metastatic NRSTS have a poor outcome, which is similar to that in adults. More effective systemic chemotherapy is needed to facilitate complete surgical resection of primary and metastatic sites. Aggressive pulmonary metastatectomy can increase disease control. Copyright 1999 Wiley-Liss, Inc.
BACKGROUND: Because the natural history of pediatric patients with metastatic nonrhabdomyosarcomatous soft-tissue sarcomas (NRSTS) had not been well described, we retrospectively reviewed our single-institution experience with these tumors. PROCEDURE: We identified 26 patients with metastatic NRSTS who were treated at St. Jude Children's Research Hospital from December 1971 through July 1995. We evaluated the characteristics of each patient, including age, sex, primary site, stage, type of therapy received, and outcome. Sites of metastatic disease at diagnosis and relapse were noted. RESULTS: The median age of the 26 study patients at diagnosis was 14. 8 years; 54% of patients were male and 69% were white. The most common histologies were synovial sarcoma, alveolar soft-part sarcoma, and malignant fibrous histiocytoma. Most primary tumors (73% of cases) occurred in the trunk or extremities. Most patients presented with large (>5 cm), high-grade lesions. All 26 patients received chemotherapy, and 8 responded to an ifosfamide- or cyclophosphamide-doxorubicin-based regimen. Radiotherapy was administered to 15 patients, and 13 had a partial or complete resection of the primary tumor. Six patients underwent thoracotomy. The estimated 2-year survival for the cohort was 34.6% +/- 8.9%; the 2-year progression-free survival was 15.4% +/- 6.3%. The lung was the most common site of failure. CONCLUSIONS:Children with metastatic NRSTS have a poor outcome, which is similar to that in adults. More effective systemic chemotherapy is needed to facilitate complete surgical resection of primary and metastatic sites. Aggressive pulmonary metastatectomy can increase disease control. Copyright 1999 Wiley-Liss, Inc.
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