Treatment of Metastatic Childhood Soft Tissue Sarcoma
Standard treatment options for metastatic childhood soft tissue sarcoma include the following:
Combination therapy using chemotherapy, radiation therapy, and surgical resection of pulmonary metastases.
The prognosis for children with metastatic soft tissue sarcomas is poor,[1,2,3,4,5,6] and these children should receive combined treatment with chemotherapy, radiation therapy, and surgical resection of pulmonary metastases. In a prospective randomized trial, chemotherapy with vincristine, dactinomycin, doxorubicin, and cyclophosphamide with or without dacarbazine led to tumor responses in one-third of patients with unresectable or metastatic disease. The estimated 4-year survival rate, however, was poor, with fewer than one-third of children surviving.[6,7,8] Children with isolated pulmonary metastases should undergo a surgical procedure in an attempt to resect all gross disease. For patients with multiple or recurrent pulmonary metastases, additional surgical procedures can be performed if the morbidity is expected to be acceptable. An alternative approach is focused radiation therapy (fractionated stereotactic radiation therapy) that has been successfully used in adults to sterilize lesions. The estimated 5-year survival rate after thoracotomy for pulmonary metastasectomy has ranged from 10% to 58% in adult studies. Emerging data suggest a similar outcome following the use of focused radiation therapy in adults. Formal segmentectomy, lobectomy, and mediastinal lymph node dissection are unnecessary.
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Vincristine, doxorubicin, and ifosfamide with granulocyte colony-stimulating factor have been used in patients with unresected or metastatic tumors. The Pediatric Oncology Group evaluated the combination of doxorubicin and ifosfamide in children with unresected or metastatic soft tissue sarcomas because several adult trials have suggested that ifosfamide-based regimens may be superior to other chemotherapeutic regimens for soft tissue sarcomas. Information about ongoing clinical trials is available from the NCI Web site.
Current Clinical Trials
Check for U.S. clinical trials from NCI's list of cancer clinical trials that are now accepting patients with metastatic childhood soft tissue sarcoma. The list of clinical trials can be further narrowed by location, drug, intervention, and other criteria.
General information about clinical trials is also available from the NCI Web site.
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Corbin KS, Philip A, Hyrien O, et al.: Do patients with pulmonary metastases from soft tissue sarcoma benefit from stereotactic body radiation therapy? [Abstract] Int J Radiat Oncol Biol Phys 69 (3 Suppl 1): A-2980, S752, 2007 .
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Pappo AS, Devidas M, Jenkins J, et al.: Phase II trial of neoadjuvant vincristine, ifosfamide, and doxorubicin with granulocyte colony-stimulating factor support in children and adolescents with advanced-stage nonrhabdomyosarcomatous soft tissue sarcomas: a Pediatric Oncology Group Study. J Clin Oncol 23 (18): 4031-8, 2005.