Intensive combined modality therapy including low-dose TBI in high-risk Ewing's sarcoma patients
Twenty-four high-risk Ewing's sarcoma patients were treated on an intensive combined modality protocol including low-dose fractionated total body irradiaiton (TBI) and autologous bone marrow infusion (ABMI). Twenty patients (83%) achieved a complete clinical response to the primary and/or metastatic sites following induction therapy. The median disease-free interval was 18 months, and nine patients remain disease-free with a follow-up of 22 to 72 months. Local failure as a manifestation of initial relapse occurred in only three patients (15%), each having synchronous distant failure. Eight patients failed initially with only distant metastases, usually within 1-2 years following a complete clinical response. Two patterns of granulocyte recovery following consolidative therapy (including TBI and ABMI) were recognized. The time to platelet recovery was different for the groups with early and late granulocyte recovery. Patients with late recovery did not tolerate maintenance chemotherapy. However, there was no difference in disease-free and overall survival, when comparing the groups with early and late granulocyte recovery. It is concluded that these high-risk Ewing's sarcoma patients remain a poor-prognosis group in spite of intensive combined modality therapy including low-dose TBI. The control of microscopic systemic disease remains the major challenge to improving the cure rate. A new combined modality protocol with high-dose 'therapeutic' TBI (800 rad/2 fractions) is being used and the protocol design is outlined.
- Research Organization:
- National Inst. of Health, Bethesda, MD
- OSTI ID:
- 5011978
- Journal Information:
- Int. J. Radiat. Oncol., Biol. Phys.; (United States), Vol. 9:12
- Country of Publication:
- United States
- Language:
- English
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RADIOTHERAPY
EVALUATION
SARCOMAS
WHOLE-BODY IRRADIATION
BONE MARROW
DOXORUBICIN
ENDOXAN
FRACTIONATED IRRADIATION
GRAFTS
HARD X RADIATION
LOW DOSE IRRADIATION
PATIENTS
ALKYLATING AGENTS
ANIMAL TISSUES
ANTI-INFECTIVE AGENTS
ANTIBIOTICS
ANTINEOPLASTIC DRUGS
BODY
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EXTERNAL IRRADIATION
HEMATOPOIETIC SYSTEM
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IRRADIATION
MEDICINE
NEOPLASMS
NUCLEAR MEDICINE
ORGANS
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RADIOLOGY
THERAPY
TISSUES
TRANSPLANTS
X RADIATION
550603* - Medicine- External Radiation in Therapy- (1980-)